{
  "manageEntity": {
    "action": "Save",
    "entityId": "586134280",
    "entityType": "Track",
    "nonce": "0x2faa69337ad3f9fcb6ce6debbab558fc111f0c00101c0465d1737dc6cc4b88f6",
    "signature": "0x68b6098182dfbda59a400244889592c37917be8093668f635eff9a9ce7ee6d266265bfe55bb5268b2dbfa435ac304f5dc9acd949c1effba07a3614493fbe42ea1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}