{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73513",
    "entityType": "User",
    "nonce": "0x27759d35c48babbb4b6a1ce6d15351c59b99d1979a016756dc4c7fcc4f1a9169",
    "signature": "0x4a8d43422d2e55b9a547534eda0d853027dc3df63fd7d6daac4861b866e221d0481d8bd46603dccc74b597e0c2e07257d99c643b27a92d3dc8a5486f7b8624d21c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}