{
  "manageEntity": {
    "action": "Save",
    "entityId": "1017066008",
    "entityType": "Track",
    "nonce": "0x8e6c075afe1c1df0bc8b0227405825f31d6c598b761d8a8f66ed7aa63873399c",
    "signature": "0x4dfd95fc5f99d70ec9e957f81ee2b67ba5b6af142aa3b401b696f162ea9b601e07c31d96a692da93735178e60793edfffaa80cbc26a1cbf61bf5a225b357a66e1b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}