{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6b4cc31cbbd28b14771f8472d53fc7013ea6e1c9ae131e4132c5dae7998ccb6f",
    "signature": "0x655f5cbb88406cc0968546c29466dd95a012c01e4614a1a1661c4c9a12e4e2c308a9f7e48361e589335d19789f78ef5d173168e0fc91e957f45d45a8f9e672601b",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}