{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd19a33e2de0f8bf091157ac2b3b5772cf90ca785a34ea0c4153954ba5cb81b31",
    "signature": "0xa51b9eda2136ba3b26e0a338c543d0622286e4ec6799db8e3de04a5efb134b8b3cd6ccf55bb9e0557cc8838cb5b9c98ed81d79f52b1f51ebd7b939dbe94292171b",
    "signer": "0xE4b7Af91972437c8c74EF4d026c894BaC9ac5e10",
    "userId": "264951831"
  }
}