{
  "manageEntity": {
    "action": "Save",
    "entityId": "1692689564",
    "entityType": "Track",
    "nonce": "0xf6693a1ab6d4d2e88c8318bd2c9d0cf3673aa3dfb793e37a32d3584f84702ef6",
    "signature": "0x7ea504cd64276465cb9afbb8fc3beb645d95891674c89c0232e3b67f27aad6db62de81e07847de83b1c6ebf11c1dcd8760e973cfb1a343f0d9f9a26c919e59661c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}