{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0xf0a5787e65b99419478902386d9f39d2d28d8393cf8959eb70a878d20d9142e2",
    "signature": "0x6dee6d41afb690363aaa2ee044cbc3b7ef6b86471327398977b064318b39d37f4c2a5f22c4f2ac4cf4a43dfb239d80728bd8090e50976e5691b90cc8ffd8cc281c",
    "signer": "0x51F0B9CbfA02b6CA88Eb180845C7F8C1B74ACE39",
    "userId": "319049298"
  }
}