{
  "manageEntity": {
    "action": "Save",
    "entityId": "1934841714",
    "entityType": "Track",
    "nonce": "0x026858a59ca7886fa8f662bc9da1445a8e94936917f2ae10515d9950dea974ac",
    "signature": "0xdb66b074e62d62d05a752a0cb0bb00b1ba45bfd90bc6d6ae194ee1885c0f25077cdfd4bb511c1e9af07124f135fd491e825646211dc713d8d78ad914be74fb861b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}