{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7b2198ffabaf2fe68d08faf657cbadd914f971447499a50c5f812da6ddc05d8e",
    "signature": "0x47a37bec8b394b2748fd78f314334fc0f66758926eb7303fc28a672dcad3f8464c0f9fa5b31b02b549773acfc643e85504ea99c579f6a2282f553a38911ac8771b",
    "signer": "0x0955ef7B60168ED330a19238940FBBb278315922",
    "userId": "648083336"
  }
}