{
  "manageEntity": {
    "action": "Save",
    "entityId": "1050844316",
    "entityType": "Track",
    "nonce": "0xd8e8389316193d477bb968e78cc6952a1d6672199b255a275c0fd882e9e9d4fa",
    "signature": "0xf75a216267f647b731b89705644eab2bc5d95f5a787a09640677d4b4e40c361e48de67130360b41be3b08c48db94af3583649eb6253d216c171689f2ed466d861b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}