{
  "manageEntity": {
    "action": "Update",
    "entityId": "406716751",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb122d229333ab09de3b2e1343e607040b4af4d0da1b272dc7b941f7fa7cf7dcc",
    "signature": "0x24aa6922017209ae52a8e1e4b2598e762cf106bc7bcc5510868b173333fd73914b366f3a69f3fee6edf95ac12f439e0f091f19b791ead4ed9c9706e5a7b566a21c",
    "signer": "0x31eba27Ca105bABB3B8590b9A71b07C6d1e7c747",
    "userId": "406716751"
  }
}