{
  "manageEntity": {
    "action": "Update",
    "entityId": "981794320",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5dd4dfd8261560a270981325234cd7c48ecdceaa2dd7f952d9c475893f295f61",
    "signature": "0x91415fb93234206e304eae56eed1d2124242e6b525cbe57abe0159e6c90f41ca24306cc9bcbdcd5c036210637b6b3d3a484a41eb52cec3374a80c059b97ab7f91c",
    "signer": "0xa5b420C5662f7DeC2A92528347Ca4C90bd7fB4E4",
    "userId": "981794320"
  }
}