{
  "manageEntity": {
    "action": "Save",
    "entityId": "955935991",
    "entityType": "Track",
    "nonce": "0xfb1df79028cca1ff0e5aa26928379afdfd77a42d8eb3eb56cb684adba64415ce",
    "signature": "0xeea139c31c1dbda9ac38c4da675969742accb4e87a0522a644cca6f72f7fc77f6f71f215d2416958d79bf12c5b74c77a1abd122abb9b65f37025f5e276d6d04f1b",
    "signer": "0x3df67dfC4e44eb904F21415Ff9d1c71d584c33ad",
    "userId": "180188"
  }
}