{
  "manageEntity": {
    "action": "Update",
    "entityId": "160012753",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfb3aa3603d47a788dfcb3f0baa5d13ff804f92b6146d5f82d75fca5b6cdae2ed",
    "signature": "0x24ccc0e53e855cf698c3154c514ffa6e92cb5e325d6ed094731cb558f6a9090f5ccdb5938b8910dfd4d17acf8d9bddd2f0db69167e8c31256b402474555794b71c",
    "signer": "0x812B7A80dd633A71317D6686237dBdB80B36B2f5",
    "userId": "160012753"
  }
}