{
  "manageEntity": {
    "action": "Update",
    "entityId": "729154616",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc6ee3bebc8a4797b8ca39159991ac40ef5be4355afe2ebb18fc01a1de1cd46ab",
    "signature": "0x453aecbc9808e32029419a536cc670aa57bf6819c91118b4bb0b5c92c4a4307a4d9f0a6f9b6593c0a80eb2e4669cb40e3b255f93b5c47d2ccd4f52f41b6d785b1b",
    "signer": "0x8b35F6c2f94CE40d4327c9A27d8121B4AA14e3CD",
    "userId": "729154616"
  }
}