{
  "manageEntity": {
    "action": "Update",
    "entityId": "147912601",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x43c78db7ba7d554fb8ee387b80ab2c053a9542732416fc77e04c7b289e091195",
    "signature": "0xa601568093275a8d14889e7394ea3a09319351af9e8e7c3bebf9a0ca7f6b8362110df4c5dcb6a53bfce76a21d1244e567b2f01e0e2c98157cd8c20585aba35391b",
    "signer": "0x704abd5d0d95b9fbade936509806C7bb1173B8ad",
    "userId": "147912601"
  }
}