{
  "manageEntity": {
    "action": "Save",
    "entityId": "1024055",
    "entityType": "Track",
    "nonce": "0xb1f14e99574ab7970545321a583ccbc3406a6860c709b2628a8938310d9cad46",
    "signature": "0xcbd0588df3823174e98a0f2d9f9dc443ad607df3380d7a572f00a251026c152e3c5a7a50c4c6437a2b019ef20035f64fb121d5c8717816f449e537af984d9a5c1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}