{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x66df45be386ba231760dcf81832c89027b7fadf4f893182e10a4c5854d1dfa0d",
    "signature": "0x575c8cc9d7e150aaf1c6c275d6a5bc05630f890647e54bb6207a647ba57c71ff09c55050745e7c8e8b7194f1c9e33c2230b1ee55a27f21c8abd70b949bb8a95e1b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}