{
  "manageEntity": {
    "action": "Save",
    "entityId": "764770341",
    "entityType": "Track",
    "nonce": "0xdc69c0bf4e361deb3c5887d6d51a5460ef133f3e198aa2e19d8f388d7d02abfe",
    "signature": "0xe61f12d0536696daa061f49334d3fbbdf08cd37c8d3a6ab970bd38d2b3e723a37690d3eaf23e1549a12f948149b21ae3836f031fc97b8ecdac8ea9e07258d9641c",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}