{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0x7df5ced90c5f53f249eeb844018e196612df902e7b3d77839153763aaae9bafb",
    "signature": "0xb31f4b89faa26a784bd6322127f4e512d571cd36aab23e1a82e14f4a4d0675c738501f366d8449d1f435e05e58e4bbb6a2dacca79310a679b87a0294844181e51b",
    "signer": "0x3887Ba427ff35Faa1f4a6feA693a23E3A368B71d",
    "userId": "74862939"
  }
}