{
  "manageEntity": {
    "action": "Save",
    "entityId": "182658",
    "entityType": "Track",
    "nonce": "0x138a077706d36057e3f5d0915821d0acd292df7ffd4cd6b1517209163eeff946",
    "signature": "0x7143c98794dfb84009a0f53b30706cde289740796ac9771088b72aafe12734df357317a75112f9743886186bdc06ab2006d6d50abe8d27d6332a4534ebbb5cd11c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}