{
  "manageEntity": {
    "action": "Save",
    "entityId": "1484161039",
    "entityType": "Track",
    "nonce": "0x36a87e8a1c3e52be71e90481bd2d091f9010b54a181ee2e3e3c3ebf6e0dbf9de",
    "signature": "0x60cbf619e8e5d594e73fb0da49a4ddd35f9ab7220e8d3e20eaba5b301119bfc954661b0b31b387a1130a81087a3f863e3006a89bf3959a00167f66ba323a3b731c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}