{
  "manageEntity": {
    "action": "Update",
    "entityId": "560390284",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf2147a32f68206b71f264fab6bc4fe84a39e5dc5d73622ddd22a29ac672d7fb5",
    "signature": "0x5d15a544d09027880728ba9a8419c3f1ba56b98821d354e79876123a5a8c6f6000f2934f3581f697c6caff6dac18e269d84b731d40c1b758090e191316b2a4911b",
    "signer": "0x736A5D5caFc62d76542717D2688Cd344111165FA",
    "userId": "560390284"
  }
}