{
  "manageEntity": {
    "action": "Update",
    "entityId": "401235853",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x88fb7685d8ce4cb90741d40bf2fad63e152c0d376aec557f0d1929e1874bd34f",
    "signature": "0xb45a7cdd0b41ccb7e7f8248b9d4fe5c160d4ddd9c08a4cd94b81218ca761735c5e581b769653a909a353aedd5038aa5c7dc11f7a31d565853dd93c0b8f57e7921b",
    "signer": "0xC982f8B52eee7F9710Edeb184eA0a7401A3C79fC",
    "userId": "401235853"
  }
}