{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1645731",
    "entityType": "User",
    "nonce": "0x431a357a66ab766ca464ad893d643875b173a9384a07ea104dcabf726bf3f112",
    "signature": "0xe70cdbaeccba76c9a3635f23c9c228ef6815ce0e95f43bd8c50d2c7b82d6e90d7ba7deaaa6bc50e672da6204ad035a45a6b2294d5c2a4a267963624a5e45be6a1b",
    "signer": "0x8f0Aa8630bdC846D6a2eB06f6b4b21f508E95D29",
    "userId": "30179440"
  }
}