{
  "manageEntity": {
    "action": "Save",
    "entityId": "798988328",
    "entityType": "Track",
    "nonce": "0xb3f80bd8cb5c610eca5c2ed09af9b9b2cffb2671dc70ab4b20478ca49e68e798",
    "signature": "0x172d71db7a230ba0a5b6802a93d514c4df5cc8d127959879886185f5ea7577fe7f6b6f327e1d234ff71902ba3cf46bce4c09bf8a03ad6281225785c4a199da871c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}