{
  "manageEntity": {
    "action": "Save",
    "entityId": "1477832796",
    "entityType": "Track",
    "nonce": "0xeac6d080f3001a012b1195610f618816edfd38937dffb1158b3ca90d988b832c",
    "signature": "0x5e6b4e216f500dcefd7954e49266707bbeff29282634fb14c6802d1595176236429423a68615aa00039b43bf00ede435bedaa1a33dcbc9cf8556d262c7eca3511c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}