{
  "manageEntity": {
    "action": "Update",
    "entityId": "434987572",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7b005019ca7e4e58b9c1eda0985fb2a3a9a396457de9afedcf7fdb643ec9e511",
    "signature": "0x7f26a64226e5ec437d5cd0c3e99e1c6d57d6b50c80320a2fd7ed28466b879dcc3205509313abf49d3d9907260f8f40587d73b305c9343eae5473dfda05b50b781b",
    "signer": "0x889BB74c17cd99f2f36F745FD25be89a32E568F9",
    "userId": "434987572"
  }
}