{
  "manageEntity": {
    "action": "Save",
    "entityId": "2062095661",
    "entityType": "Track",
    "nonce": "0xf6ac41d6ab3d56fc89d7e328bd351b56f69bdedd51470b300fe04cd398d39a69",
    "signature": "0xa6e3f447f0209d20ac3587f02543a35d60eebca8b7f12809ee8e6ac2dcc7902c51c68eaf8a7fa3f046311c070202aa54ff65c36f8617bf12009aff995e32f3351b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}