{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x936c144e12e891e69552150227042e49bb068f5abb44888ce1ad593d2c2ca8f1",
    "signature": "0x78c5ef359f784adf8a1e0e3316a6a1160bded319153b577e3703c14334f5bf7438061af38d35ad79dd2c119cd3f224fc1bfc3b05c873d47ba2abd3545d75e6fa1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}