{
  "manageEntity": {
    "action": "Update",
    "entityId": "40075914",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierapfawdz3pe5wwz5n2t4mlgpzfrzyryxjavcap5c5e2fawerronvca\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1969003071},{\"type\":\"playlist\",\"playlist_id\":1316290417},{\"type\":\"playlist\",\"playlist_id\":558020552},{\"type\":\"playlist\",\"playlist_id\":1774816705}]}}}",
    "nonce": "0xf4da93ce2c225aac552f459a5144894b973e1f267ee6acb7ef738e2fd899784c",
    "signature": "0xe86481b9ec6cb4dfbfe7ab3c9f11de54808aaf5076f0976010ad79a28bb164db40bb1dd67242d29db3c8902715a81da15c3969e09dd8f67b49d885e6fcdb64d71c",
    "signer": "0xa16b770944D3c3A70DFccac0F1d5413a04C1b899",
    "userId": "40075914"
  }
}