{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "733190",
    "entityType": "User",
    "nonce": "0x5f3214dc807c0735967dfe7e273f12bbc192310d0d7c87a639725ab9a2a09389",
    "signature": "0x56b7a761b90dc5f645dc766b83f417f9d065e0a6f897a8024a8d1a6864d17c2c46c02b82ebca5ede5f5929765d9d3de49b6848f88f93c12b676beaa4475f8ab41c",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}