{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3f2694ce0c587efa857c4fd866268ee3820f766b68e221441c6525e7c6c99780",
    "signature": "0x9110ab947919c86475f1e8ee859172412bd1e130488071853aa48401853592484e169749384ff10a67d01ecaf2ed3914936b0c29183ab33141b386b5540064f91b",
    "signer": "0x55B320FE4ae0dC96fE927A1d4fA23b18d1874EF1",
    "userId": "562822143"
  }
}