{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0xb0ddeddb8aeb8508a0637ea00232c8f3db0942862ca29f33403530e12c9188cc",
    "signature": "0xd1047e2ec74ee16afa8aec6accf06bb3bebae57cecb771a28900695225429b034aac83a0ee8a89e365656163b9f528ee535b40c564f1b08c4856787bdfcb92291c",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}