{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x97b82d2a52b8dc023f8458772aa78dd4e0ce9151ed8738c0b3c1617626e0afc6",
    "signature": "0x754dade87b868a67f5085f32c883e246cd22bb4e01bd14cb1eaf3165a277ea693dc476455f227cc6ef17c225f9aa5fa1143165ac6ae3b86b5499bd51425f56011c",
    "signer": "0x5dC0866aD3299e359d5b6331246995d7CBcb518b",
    "userId": "642005424"
  }
}