{
  "manageEntity": {
    "action": "Save",
    "entityId": "635385215",
    "entityType": "Track",
    "nonce": "0x35ac23df6b847b6185133830cf515140e53c94d70b398f526210146b153d8f38",
    "signature": "0xc6c2557426a0d76f4149da8662bc84a45c66111dd68250b8d2d66af3ca061e681b43a13943bf9dfafb69a258ec1957cd1cbf17c72280dcf8249c0b94a485182c1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}