{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xe2e0bc6ad4c7fcd0af5a113c09d2bcd0a9263cd214e2d123639ed48f5fd3c710",
    "signature": "0xde0da9cef1598fb2fdc97c75526de991ba7ff3da9a61775fd25aa58c5edcca574e5f1f685ff701873dd924e14081889272b864245809b5345bb789eda73fd5b31c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}