{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x111cd35081518e842c376be71f651fab69374892a89ca48fbf489972127c3be2",
    "signature": "0xbd8b6fc165d1e8b979e249f780a7c660b76d85b8eb4ef0fc01336f85ce101ca1475b7c809b0cae470dc814c621e5d24cff147036f1497e43fc48958a98c2ed121c",
    "signer": "0xE2d9E391f8BF40b0B8168ee9aAf369Cf123e10df",
    "userId": "600315060"
  }
}