{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123131",
    "entityType": "User",
    "nonce": "0x9aeb9ccc02b65dffca1b9079bc1623f47f08af979f9be27eba8a6ebeac41d0ed",
    "signature": "0xf151fdc5b176b0a067e93d761cdbfac7249c3173a5d4498b6ea67d4570548d0f544e8e0ceca781d8c75495d1b426633da04b26d572e18acefa04d5e86daee7491c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}