{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "378559189",
    "entityType": "User",
    "nonce": "0x02c5708f463c73af9050d677dc80f3d4017a4150cf2ecf4860defc313aa38d56",
    "signature": "0x00fdbe7eb71477e3b2142183138956e65596081913d4435d33a231f9992107696c57f0f324aaad71308c7b78838657a3d8b15bc625bab98df6ac802074ad23df1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}