{
  "manageEntity": {
    "action": "Save",
    "entityId": "2147229196",
    "entityType": "Track",
    "nonce": "0xf434e89d488e36fb72ef67f07277c84e44937de48391b8beda5456e231d8efdb",
    "signature": "0x5be27aa0159f608df374a880db4a6077b848c0d47b345f1fcbdb6d7eee0547864f530713ebbca0815ab55e5f485ca7467a5c0011bf3b9da12b67474cf10f9b7b1b",
    "signer": "0x53d8e61f7BdCd69E26B5AAe8F197464091224DB4",
    "userId": "99786"
  }
}