{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x451d63aa9ad494ef1ea42a50e9d2af3122fb2f61837b53033b677af216cd8a06",
    "signature": "0x256cb0966bb13e8dd179153e566920cddd479463bb003771037724befa8a160070a44f8ee2cceaf1d39c78501caeec0718d57f1c095132d26a4ec49929d7b8151c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}