{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "527997908",
    "entityType": "User",
    "nonce": "0x3b52c5b8806cae9fb93834b656e05582b35e1f4d06758fab71e3db7a8b2ec870",
    "signature": "0xf84e8a3bf5d38ce858a66c525998ccf10f0082bccb82ef6380c87fc75036d6be1f6c6d43bf9240f2b69767aba58c53e89bf780e621b775bc568e297811d68a651c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}