{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880650",
    "entityType": "User",
    "nonce": "0x933cd3ebc175029e560e2ed3fffe4eb14fd8176238d9926d51e16c2cf432923b",
    "signature": "0xccad3170514f2b8dbd30e9d99989d91c245cf1c27fbc7b2faecfdb74a936e73b4943ea0e3a748f585948545ce5940fe6c329f23eddb886980f1bb91394f7a24a1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}