{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb352b8882ee99cceee2c5f5edb766d09cc4f122989e04d9f26bcfcca8a28ff33",
    "signature": "0x4d3bb71d1d671fb5870d6cab965523301ee4049f6ea4ea1fb547b2bfba8dbc7964456887146ab6937a00d8e297e25159f5dfa6a759c178c1ed65615fc35055e11b",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}