{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "599112855",
    "entityType": "User",
    "nonce": "0xa1e030beda2dca1dc6e5d3640eaf2b221ffc80a1297b06e0f57587a3936eddbd",
    "signature": "0x1be2f02492a7dbc8a7c5977e6cb7b1b8afc9293299397326f2f10d1a3e74be045d6ff65b01bcc3b35cf9415a375b527f5b3a76ccf4a877e1b5cbc00d5dd9ff171c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}