{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xccffbf1d9b52463d410f02b7938220bcd98ee84ea76af9f20e2cb27b4fa5c091",
    "signature": "0x7d24c8d2d9901f3daab799e7050425ac09d42ec4f59bc529162133847ca7ceed317320de90ccfc831a2ebdbcebc303b96848c26cb883ab6f9454caa3f523572b1c",
    "signer": "0xf46738b70Ff8A26Adc03F9334EB5C263DD22D72F",
    "userId": "270101908"
  }
}