{
  "manageEntity": {
    "action": "Update",
    "entityId": "143995385",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x50010afe57ae870ed50381f83411dad3f1c12522b7385629766573fc292a6591",
    "signature": "0xbdc9a4d0620477b16d2570ee042c7496d4d09fb8d524c601d6b857d502a5826f180cfbb9fc06961a1c99c625be487d1ef8d128236b473911c6652d1c8ae662751c",
    "signer": "0x89fee20b326EE829A0A4ed25317B9B3A735387A1",
    "userId": "143995385"
  }
}