{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc787d198cb3e867f2c952f621c59ee5a6e280b46f76fcb54fccb7f5ae66e01cd",
    "signature": "0x6f54d856fb81549b64b15daa59d486bb0571ed5eaa94868a9e4a159113d432af461fb80cf4b74c8b6931dc305283e05965616d6dc8a998766236df2da5e27bb11c",
    "signer": "0xCEADf69D707d025460a3d27226683bCCC04DBA60",
    "userId": "187910835"
  }
}