{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "752389",
    "entityType": "User",
    "nonce": "0x27bb0242a663ebce40257b0e1e6e0037767c92db1def801d3c1c1187cc3f7397",
    "signature": "0x038da9da8d14843ba26f3f8101db5379056adc6e64d9000b8cd26b2ffa5dd2257877819414d160b4fb958d2bdaa6cf4ae0a77b8a3f79e6769333a4dccc0d391e1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}