{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1104",
    "entityType": "User",
    "nonce": "0x3bf1ea9789a906ad155c62e7ccc57d1dc1969308ccf6943c61516b18f68c1662",
    "signature": "0x2f836e065d4d586ea6b6eaecceb6c44ceb6b0247a5f19a52e4e7f772f9968db0141620b93b227066a7a0cd9c3d57c8c78d985b84254179f603c1f2b8de1db8431b",
    "signer": "0x7212FC9b44b2BB370D62E8b98dA3f7D74c307696",
    "userId": "324170795"
  }
}