{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1877627",
    "entityType": "User",
    "nonce": "0x0fa209de3ba7f6f365423aa0fe69618af7b9b390abb875255479e3f9ff83b8ea",
    "signature": "0xb048c73e22ccb6eaf86550b2648c068d6669c2013457c091632cda4d41d5241f0b0b83ac6ffc5d20cee2e4b06d8ab6bba59488b40c41db35155f9b3d897cdd931c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}