{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863739",
    "entityType": "User",
    "nonce": "0x707f7c0c8b2293e9b06eaa1323a75c092ed3af27326ad1554e507bf26aa2466f",
    "signature": "0x988086c36324f5dd87176872fe6d02b37e670f72c6ed3c48cdfefc4e439e4c9e535945fae382e0af756ccd58029e1243eef4bde9014b32f368baeb6c965fa8b31b",
    "signer": "0x69f11622ae51A55c34462DAfaAa5b4E7e77AB644",
    "userId": "513195827"
  }
}