{
  "manageEntity": {
    "action": "Update",
    "entityId": "856700503",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x177eba4abfbd0f7358a46f7452334cfeeae2ed2b2bc731bb8ebc1ccee914b819",
    "signature": "0x81710b42c4d093ff4f6f9a57cacd1f0f550c9eaaa86f3c176697a85e25a880ff753a78dc2b978df36672e030b063837aba8a115661269a70bcc81dbd448c45611b",
    "signer": "0x2Af2AEeE011CF6bCc6c93622Ac4577ae4b2Bb2aF",
    "userId": "856700503"
  }
}