{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x56558ee2150c88febbde268a7bf1f605698ff5aa50c92097e4cedc870e0faf3c",
    "signature": "0x5bc3e6ab9198049e26331de89a060654263a0d9cfe85e1f03114ee72523d0a5d27f132a178e87e08bb3e9f6d358696e229fb335f846c4f1b9598c613b9cfdb951c",
    "signer": "0x415f3eC848127A9052b9C6D2DDAc700a9ecF91D6",
    "userId": "23230553"
  }
}