{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x491f337f3d5ab9f8137c3646e357b35ee29238a6c9a16be839a9c3a53c36d11b",
    "signature": "0xb3b0b4815372a86c6084a6db889d8f583132def3421f70023041b80e73926ea86a98b73464adcfc1e326309965db7f0d91e3ef562db605ce443c8e80a902b4d71c",
    "signer": "0x1A03dB80e576Ab52a1E1852ba81778ae8f8f3f95",
    "userId": "876735576"
  }
}