{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0xacecdfd37a78812e9dbdfb0be03758bf5a1d7088f0d5d3aaac0383d95437030e",
    "signature": "0x22776ea4928461ac599b7468cc246849ac38da1a03b7110d1b57d21db31ae4c144c4a28ee6b8cd1460b7870dca9c3082f7373d081185c4f1cfaa2259b49ee1751c",
    "signer": "0x99b5F46ae3978FB02A645f824e51700B327f1d6e",
    "userId": "97654"
  }
}