{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x30645033f749f7ae042043675bdebdbd878d754af83b1889c80667851faf41aa",
    "signature": "0x737c8974b6a462a93badff615f6ef6b00fae714869781eaea6fb11b717854e7d04eb2319167336c08897cae74b937928fcc9329dfc67aa49f3e160935bea02ef1c",
    "signer": "0x3FeE0Ea3F221d5a5eB081498551579Ce7529FaAe",
    "userId": "435330450"
  }
}