{
  "manageEntity": {
    "action": "Save",
    "entityId": "1783690550",
    "entityType": "Track",
    "nonce": "0x9ee21b4677e57458e4a4146ba6fe04bc417b1881734fffdd0c8b24c92d23900f",
    "signature": "0x0c8cedb90953d7f303b85e70e24f321871507c75b758091c3e17c1eaaad7882e60687e036ee19e58d3370fb6e68b5c05921af835e7d3ed6ba8f82d97fa754cad1b",
    "signer": "0x568426a5D555ADe94657d547B2Df4a4dc1f0C014",
    "userId": "71569007"
  }
}