{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0xfc376efa4344f888f379f50aae7df82110beb63658d0a56abae1c1cac68738f3",
    "signature": "0x8a15dee95c2f6b2dc5be46e15f89bd687ce7e87467e750cfd5eae8aee05dab602e313fd117e16a6420b35f23593530fec2b473d253d0886f4948b4b842e566d31b",
    "signer": "0x3CEbf9bfE1b24355cBC348701860d601E226Dfbb",
    "userId": "172240066"
  }
}