{
  "manageEntity": {
    "action": "Save",
    "entityId": "2029166854",
    "entityType": "Track",
    "nonce": "0xe8966f865f76e4f463a65255014a2931a8791bf48898751c8aad581f20de5131",
    "signature": "0x9acf1222b5c33f91b30ccd36d1e6c90b7c014e238510fb992abc11d0a84bf32c2e17419a7bb64bbf2d9f800e365a08c4d18ca7b3136d46f14c839ecc08744cf61c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}