{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0xf90c7cd99332684af08c3ba116a33e36c73c67b05d80f043a92c818c76753e05",
    "signature": "0x0bbe0d2ccfcc9ca7ada36700ae4643e4c76ec9e6af6da61cbe23a7ec309a1cf815a5170bef0e4b822dbf1a2c062607ff9543cc8bdaef9f2a50f0f9beb24c9db31b",
    "signer": "0xbA83b3D0645C0C99c76cB296B0BA81bD641DB81c",
    "userId": "951995708"
  }
}