{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7d3c25e5977f95da463efa00c7f0650ebc00c498283a921abde27b54438a6bd9",
    "signature": "0x6c66b6a60d92d3e13f71ad19baf07d9e439200a3f7e421ea2cf640605d0957be1648c8e12b40568a861817635ab767c15c1c92a6be989411757247df1f16e2c61b",
    "signer": "0x77232B203ec1B4cD6303d80c24d8cDa55f046499",
    "userId": "604182897"
  }
}