{
  "manageEntity": {
    "action": "Update",
    "entityId": "857551474",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xeac43730255ce5f927b0247014d6798c9915d0e9ed430a5c4a9fb78f1d7d1902",
    "signature": "0x7b11afff44b6131f8507d1e055f63c388cdc0e8f392cf25a19abafe468ce6caa7b916527eb73bd12081b040cba848183f4019fef6f71f73f0daf051e17aeb3381c",
    "signer": "0x9de29362DF595E6949CaA2820c5c28c3D6b0CEe1",
    "userId": "857551474"
  }
}