{
  "manageEntity": {
    "action": "Save",
    "entityId": "2048103852",
    "entityType": "Track",
    "nonce": "0x06f446fbfe85333b7e348f2d82381b0aa37f18c224f3d4d93f949b0c7f451394",
    "signature": "0x5e47d7510285aa71c9ab1fb0c478f79bae64f68872fada0ee4c1b5a5e07cdc6e400b2785bda7207da3a899a8db76a0c80555284489decd49f7bb5ab6fcc363a91b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}