{
  "manageEntity": {
    "action": "Save",
    "entityId": "1120041647",
    "entityType": "Track",
    "nonce": "0x11568a4243468d8961b16dae3a3e1c90c9c119f3ace66222f8b0ff2faedacecb",
    "signature": "0x30090cf734e70786a985b74160384fd1274daf856ca5d32fa3b082758bbcb13e6cd792a7e493374d7b1697e30021d6538c8a7a4af1bf9a8c5ead79230fa04a2f1c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}