{
  "manageEntity": {
    "action": "Save",
    "entityId": "2095315225",
    "entityType": "Track",
    "nonce": "0x142af40658cc727ebe4d3d5856036688d974586915c5d048e3e2d0977732a872",
    "signature": "0x43eed5dff3e37e210e62e8ff19540445c340b1e1e9aae7da5314917b43e49aa9183c4aa8f059aba37598537422c4ad1c819375aa41dbaf85de9d7ef133c310541c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}