{
  "manageEntity": {
    "action": "Update",
    "entityId": "321170276",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xafd32146d9bb36a1d532e4c150f97b8330fb92649a5f8173e278d0f5619e7ad6",
    "signature": "0x599d92a794d6510d58f54acc7c9582a57ed46cad8f705645a01c9d4aa2b44809249aa32d064cb53957a0138ea215e54ac8bf1a0cf1d791f7861835aa9a88600c1c",
    "signer": "0xfbB9f279fc1A1b3699F4B8dDb0a0d0dBC6e1229F",
    "userId": "321170276"
  }
}