{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x02862a84a681994589666cecba829afdce7eb4f9dec8a3c4217d4f705345f514",
    "signature": "0x876d0159306d979a797129830cf2ddc4f0505d28e2a4ce5a470f5175445281086e4c28d957f76f887251f065f9a910783c02549cab364377fe000c6949cc8d281c",
    "signer": "0x16BE3cc7Ee03C75AD10a94fb7234B045D351825c",
    "userId": "66529124"
  }
}