{
  "manageEntity": {
    "action": "Update",
    "entityId": "338602461",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1eee3d35a1499d2a4035ce1c8453703702844723a8be12118b380cba5b8a82e6",
    "signature": "0x633ed0922e863d9bfef9b35c63a44a8e74af5b16ae780dbec156735a07f19e93621431cebf2ca0069da52e9245d4fbb729472ceb00aa67801b4023a957d0d4ab1c",
    "signer": "0x81A0Ba7d5bD757a8663D2b416Ecd2477843D4734",
    "userId": "338602461"
  }
}