{
  "manageEntity": {
    "action": "Save",
    "entityId": "361150736",
    "entityType": "Track",
    "nonce": "0x6285ccec1e9aa2186b5d37e6448b94f12aaa8d57537cdf23a322e9f6678087b4",
    "signature": "0xf53bbd67aaaca91e3bbd73fe4e8eb191c3e67fb65bd62f3e351a37fa2de7f76a5b718ff86ca73821c2b20189781cb7481b4e5de7a0e9cb611dd91aad3e230ced1b",
    "signer": "0x76433fcfc10E04743aB4EB98660d4B47526AD243",
    "userId": "328228955"
  }
}