{
  "manageEntity": {
    "action": "Save",
    "entityId": "586411",
    "entityType": "Track",
    "nonce": "0xd8414f860df91951baa1a82c7acbd93c7e0fac2c2ee54c039ff956f120db61c6",
    "signature": "0xa3e98d5dbc3476ef04e4379fcf42d408487939eb3767bbd87246f3261d38a34b545064dca75edf842db7855251fa5bf3db763d1aa619629271e21717d888a76a1b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}