{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "213759",
    "entityType": "User",
    "nonce": "0x1b87718bbc24e771c71482627ef981d05e5976428f60cc2635c931e23da7ce82",
    "signature": "0x797cbe51a7ecd7089689808391ac636d4fe4de9f1b44a7fa99d86770ee6e545a5db79c73453ec1a8ee84fc861c839b226955b66b1e0b4083cd1b53d59ee1dcf41c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}