{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943606732",
    "entityType": "User",
    "nonce": "0xb1bbaa692972818d358fb7409f6e0bb3a2cfb19e22903ea6f7f5402aa01e8d16",
    "signature": "0x1667958d2a3d6079ec5ae7544c08496dd7a6b430449a8916b79ca11d71a3608e6cb05e42baa356f979e7b225c0f2999de8c7f4813283503c012bf15e9fe4ed361b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}