{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3290",
    "entityType": "User",
    "nonce": "0xcf5746e04d9281af40b5e28c6085a5e0b296a0a7632cf1908f4f85e21bb55e95",
    "signature": "0xf1dae4b89eedc85bbfab1ae6e8c9c2d1dfd3b91cf26bcfb01c2dff27a374c1482b97e182393b7e6aad895571a5320208698af49cde6af961d68ac8f39cf7ec2d1c",
    "signer": "0xdCAf5149A8084F2C1c72dE882740656EfA9715b4",
    "userId": "994758391"
  }
}