{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb3dbc06e76c73f0f94a6feb781d2772cc8d0558f3d7f502503a15dbd32d2150f",
    "signature": "0x3bf228af218448c5f5a85bb92b7faba58257c88d3abedc5b71a7f732e6158b2a3f6d1429ace979be884e992fa20ed3ed82fc4ca3a94ba8cc2328c744372e9a001c",
    "signer": "0x089A28dd5a242E8FeD82481d96c81fa09E484E55",
    "userId": "625128874"
  }
}