{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x72626f97e2fa97b357d184f7a6dc0411665dbb4f33614317c73801032dcd4fd3",
    "signature": "0x6995e5b5a455d00ac1b6c67926881273ad4b2bd16f16ec97a7b6c5dd4953bb217b4b1dbc7d26cb0f04cfedf2ac7959cd1617d9011c8720de215858c95b0d2bdb1c",
    "signer": "0x09CD5801E4DE8958d8d5976C98AEd9219260261a",
    "userId": "172398120"
  }
}