{
  "manageEntity": {
    "action": "Save",
    "entityId": "633214952",
    "entityType": "Track",
    "nonce": "0x9e3ba35d8bf097c2998a2ce0687ae2472751d961babbab24f5be9b76b9b32ff5",
    "signature": "0xbd13904b66d22ed6903ff4397049620f608662ac93bcd1dace3d3967ca589d4d5946f43ada0a5ea99da15c1111f4f117ff8813580e894e586a65f22b43b27dbc1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}