{
  "manageEntity": {
    "action": "Save",
    "entityId": "1486869178",
    "entityType": "Track",
    "nonce": "0x732a0c4c756cb610a4a5d5e10fa4d9eca5f933dd2ab9718780eb6c68c69962fb",
    "signature": "0x0a0df176b4cd5fd832bb75604280b0d487e77b148344973ec074558dd4b83f57338737b1d68a1f821c0af1185ff5850dd66744436a151307cda9ba436425026d1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}