{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353241",
    "entityType": "User",
    "nonce": "0x5fb99ba9b7b3aea55bd9c9c6a4d91b7a8d4a149573a5976e0c16c381e6b77681",
    "signature": "0x57f19d0bbc4415251ae62893f58ba496738da586e1860004254a1d0aeb4053ad4410c3fe50db7d2d628e8d678a09789ae1c4f1defc96ce53d4d23f61c668916f1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}