{
  "manageEntity": {
    "action": "Update",
    "entityId": "781606192",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x197e98f3256a9fd0f91918c860cba1d5355b181bbd29bf27f8e838eb6598821a",
    "signature": "0x4bc0de5fe52311491309977bd488df5f3bf4327d08be81fdb6f5151782e9bf2219052962a425ff08ac12d97cc4133438aadbc63b3560c14ef8cfd0d5eeda57971b",
    "signer": "0x9Ad8ED7C8fe61616Aa541e36F83727F85F31da86",
    "userId": "781606192"
  }
}