{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17994",
    "entityType": "User",
    "nonce": "0xfc3aed48627f99a8ca173ddf9bbdf73570ea0f35fea6a96fc2cd08a6fdce0e51",
    "signature": "0x63aee75faedd8c310be4cd68f6a4389491b16a8dae65094ea041a25580b35bc71ccd4e8f405ba5063cd5637ccb3bc363d6d8c393fac61f3d06b13d283b0173781b",
    "signer": "0x8097f7562D3D2F9cbdBA391c45c0D376E438625d",
    "userId": "51978829"
  }
}