{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5d33e033d8b1aa0bab916100a960abaa130b8cc693dcf9a917133fc9676a3d19",
    "signature": "0xd6f0b9b53c09eeeffa48c0b4cab318d4952ee266266de7535ff907c91c96712050ec3205197c5724620fa8e1a8dad6f901281a4fed3ef86d8def74a6d896bf491b",
    "signer": "0xFc16cd3d00cc0E9F656756889A407244651ceCaf",
    "userId": "234225215"
  }
}