{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x843deec555a70da0a622d3aab7602d7586d0fede0d45e27d78b1c9c187ea6409",
    "signature": "0xa5eeefb803bcd4dcfa0ff09c6799e502ad83c73d961ddee3eee340b4fa4c882812fe48c7f16d0861ac8bc086e502f6378b5c023bbbf0e935a7e535708a365b5d1c",
    "signer": "0xf316f2A849ad1f1d8740A3603217F4738001598e",
    "userId": "197802955"
  }
}