{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xc1979b772cfcce467dd3529df7bb2a9a52cecb98d94d5c90a5e71f51f9e51568",
    "signature": "0x583e3c25091f088d9dc02b95755ffd9ef1d965eea3915a619a4d87dd0c839cfd4e41e667ba4017c44b8d62e5a15058a6428367407ed136bdf90db1f0ef814a361c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}