{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x123c0216dff79fd9a4434839f20dd71f67855cac062e7c261350c8efca8deb04",
    "signature": "0xc00adc4c62fbfcad4649a16555fd1b4446e343036fe35ab7da3317bc00bdbdb82a027134c5a3e468744bcfc5c02bc17fc19146b7b839c8ce9124ff8f304be2ea1b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}