{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7be959ae8bba0d11572324c79ef427a7a7cda675dfdc94a28dc579669d260493",
    "signature": "0x2fb821c8a2e89a32493149efb41d679eef5afe4104c01babc6853ecd5a7a949a7570910a842b5edbffc7b07fdefdace086e3e7309ae6b3152ffaf21a4fb89f0d1c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}