{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa0a5220b6b65fd6a878c4f99d425fc7579bd10a3f5e9ea3930d7d923efd959ba",
    "signature": "0xb2c7bba5a7eaa336c0c7ca8a56a8b3dccca618fd88288e4d5b0b5e300ca40bd45c2f9dfe633bc55dc8dbec50d2a262ba6bd067b3e63d6e638abacf070d5bef881c",
    "signer": "0x009aa7b49eAF9a76b4b0e1D3C0ef92ba4e8ECEa4",
    "userId": "350390967"
  }
}