{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x3639483e6a16515699d1fd2b1ba174466a781da64d17fb69e5ee71557a4e0468",
    "signature": "0xb8fdf859474ad881fc12afd69a4aa45e7bf21fd4e32d76edcab39eaf0a8649dc265b352f350cccd991d33ab2db710cd69b47fd07b113b5d1cf7f2bbf856572f11b",
    "signer": "0x84Ba6409f51c98704af9F6B5fB71a8c9CF0a6661",
    "userId": "912395548"
  }
}