{
  "manageEntity": {
    "action": "Update",
    "entityId": "883894885",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x6859a238fcca0880ed7b468aa6dcd3e81b279eb3ed63362d3c6815dbee13737c",
    "signature": "0x57d05f86ba7bc800ac1b9868c3f34d467021bc7e78cc7e406d1559d834590e712ec9ebed8963c42e2d8a2a48006c7dd54076c55f02c3821b6a1dc86e6efa56911c",
    "signer": "0x53Eb2aBf0EA503C2684758B722D6bB3c9F8cbE8F",
    "userId": "883894885"
  }
}