{
  "manageEntity": {
    "action": "Save",
    "entityId": "1746137044",
    "entityType": "Track",
    "nonce": "0x98c6b217fd360c80ee5edac79a3c27c150a8b9631cb99dd93f11208e2f41dd17",
    "signature": "0x3123f38c57f52bf4e11d75986af808342e4607671939a213521269ecbaa1895e7dc00573b13e1c9bc0cc46b9251d028c4d798c1d16f23c73a78291e147d126d31c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}