{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0x7801b4cf47849a0aafb2a5aacc2f547353a3a218e935d39b7ecfe7f00f24e899",
    "signature": "0xf6e26e0ef35bde7c6dc0f627c4796ecef247dcd214c2d00832cde362b81336a83b336393b2952f70e3f9d0d09f556a148f3bcb2bbf9baf27696d480d7d4cd8851b",
    "signer": "0xD7Db519a2A03374B0548c02822bE88402aef1E5b",
    "userId": "715241773"
  }
}