{
  "manageEntity": {
    "action": "Save",
    "entityId": "2111356779",
    "entityType": "Track",
    "nonce": "0x6b55caedae06616e3ab8583c59826b6033b00fa94931f8c501eaba2fe53961b0",
    "signature": "0x1cf84af4dc5444d97c305866369eab381a0023691e0b279a361fd76148f7c9927d2d718bf0dd9eea97c7a995c246f05ef3da9cd90916630a109504f195b475a81c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}