{
  "manageEntity": {
    "action": "Save",
    "entityId": "1362442490",
    "entityType": "Track",
    "nonce": "0x27d4186efc2f2fbf2aadf889eb49d19df7743cfe06466eb56ce49c51d290456e",
    "signature": "0xbde0fe15628bae500021bf8483e21bcfc3e51a3a37feae03c5e9e1da52f05005003156c554c46900de98c8d805042c12b4d582933407ba8b12f1774a78d85a6e1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}