{
  "manageEntity": {
    "action": "Save",
    "entityId": "406273",
    "entityType": "Track",
    "nonce": "0x6ed56c9629925f1e69402c39bbee151bcb8745ce6348f2dc535c042945f77b3f",
    "signature": "0xf632b0cdcad0a6ea436cbc09b1b80da171f7a1ca81f85fdf516e83e67ef9f21613444f1587c1854de247dabec68889801f659ea92f77cb1ec1dc6fba17f337901b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}