{
  "manageEntity": {
    "action": "Save",
    "entityId": "1174647239",
    "entityType": "Track",
    "nonce": "0x931004e1a6f7662d8a7bb7769d2e5ae7c795a3510ad6685987c2dc009e397a2b",
    "signature": "0xb3c090c864a48d64d4363729649fb58a1311933facc405187efcc5c80a96ec2d227c7f08eefe76fea69d8db8ddaf37f39189e770d03928f779148c41c5502ae11b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}