{
  "manageEntity": {
    "action": "Save",
    "entityId": "1694411935",
    "entityType": "Track",
    "nonce": "0x307b7b96dd938e847a18b593627164ad9ba2b146e4d639d78d95e9915327d1bd",
    "signature": "0x5ada4357c3d0c829e02e811f54cb0872d9d9f111d06fed1c0e718d6f5413849e1eb2510aed6dc2fc4dfeb4a0c33895c3d775c66c2e92c1213e8a77089e2689d11c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}