{
  "manageEntity": {
    "action": "Save",
    "entityId": "252064",
    "entityType": "Track",
    "nonce": "0xfab7b9a4e9ed8a1b19112c9010f3ca05152b2a8438a4a84a0adcfa7b9e6afa8f",
    "signature": "0xc82d4e49ae5a587a3ef0a844c37ee79ee4760df5cfbf04d8e03a48a6b74760af58a4d80c37d08e5ca4acd1473d80efc47ad67abf151d613a59f0b55476b91e461c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}