{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0a62a02ebdf31f5dbc41818f5fbe1f8b3a59488ce01c2765c15b5178945dcd78",
    "signature": "0x46413e8970c6fa8666bd1411ef19b0d08da11192c7a3118358a634299aeb6abd640c6d1ff05fb00f1a24d288182396b81a68beff06a8700a14ce9b1280029e821b",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}