{
  "manageEntity": {
    "action": "Save",
    "entityId": "998958",
    "entityType": "Track",
    "nonce": "0x454038ef1a8106e8046baae381c36f1ffabb3d2159f28efa1084f12a77c6339e",
    "signature": "0xd6c8ddba93278313ad58e5a52afa7ba6da682197e30c60b59642419e2acfa6ea1b5d63e4d3252e3585f8bfd90cf5b9da654a785e35ee06241e41a558e73bedee1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}