{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337364291",
    "entityType": "User",
    "nonce": "0xf870c64aab69348150831343ee49cbb052c3477a4c8a23a013a8f05821a8d936",
    "signature": "0x61dad9f6da380d3bd24bdf56844401b6bc431d1a34c8d44dcd409ef01b34ae301e0cc64f63ec435645da79f60c72f7bc6497376ed23123f3106b106415969eb51b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}