{
  "manageEntity": {
    "action": "Save",
    "entityId": "1717685313",
    "entityType": "Track",
    "nonce": "0x1da5a6c634acfcfac44c9ce9296b057efc65c9af57c775322a55263a0b193395",
    "signature": "0xeaa44329b98b3727fe0477bf26fce1de9b3fdef70ffd817a08f6e423327f94a552627099e51656b1e64a4ec04b27eaa62c64468cb6baed45361b66061a9fe77c1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}