{
  "manageEntity": {
    "action": "Save",
    "entityId": "47936142",
    "entityType": "Track",
    "nonce": "0x176325df0b1c6a666d5d2ba21ba3e3a4f0490e1ee0a752fd12cfa18c698d9623",
    "signature": "0x00afb6feeae6118ced2dd104567989e258545d4f399653c74015f4acbf8c5d156ca6b0de3a1be6b9fc03287cf24d44cb511fe78988c81715e144a426f8982ee81b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}