{
  "manageEntity": {
    "action": "Save",
    "entityId": "1926154259",
    "entityType": "Track",
    "nonce": "0xf78a129f5abfdf3e401edb1d3881c096b6593fff456368a82b1b41da96b4e908",
    "signature": "0x4b4ef5d02501e9ab82ac09787945a28b60d485c627124b0cb7805e6c05f3608a248bad0c5ccacfe3a98d6c2e1a5ce41edc3fe93223db9ef36750a6945e2a96c11b",
    "signer": "0xc03cf24b1C519dA6a18B6509c7F5C57d01620755",
    "userId": "870665506"
  }
}