{
  "manageEntity": {
    "action": "Save",
    "entityId": "1360434564",
    "entityType": "Track",
    "nonce": "0xa8cd2de24cd542f8efcc31cfdc1f7bc2984c4e457cb75dc51ddcd9320586417e",
    "signature": "0xc224f1b94a2c333f83b4156ea7956364bdae26c2bfd0042c1d3148a4b4fc156f05286a44c3b5c1bdc537d488a5fd7b2f9200c9a3cb661f0bc01c6aee24436b5c1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}