{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943474958",
    "entityType": "User",
    "nonce": "0xe35bf26abb9c5275c7c91115635dad0eb9e04ddb53d2e0eedf4690593020918a",
    "signature": "0x9abc8450f035f99486caaa4cc55e1d0976831ed13a8e426ed2f6155db007d8b55955b7251e2a8ad4fa64d5aa59c71b6e50e8190e5567c7daf3c140c569f61f5e1c",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}