{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x157aa28f48e2db3c96dc7d3a5bb1f10600bbd041bfddee08aaa9ebdb54ac9241",
    "signature": "0x5a7186866a711e62fa79665d1d14a06181fd8c1fac2a287c728169da2b822c1d3224695c7718eac9c2ebee708b0d077f2ff4dae702abce9d6b65bfb43ae8fb881c",
    "signer": "0xa8a2Ea2f7568E67353A0005D29D9c9C7C62234Cd",
    "userId": "123628236"
  }
}