{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4138",
    "entityType": "User",
    "nonce": "0xbb73358cd1c3559201f44f67b982d9558d1ba8e1011bcb4ede75a81ab42b8c72",
    "signature": "0x2906cdebd97381d34f9514b56ccb6323db781349382e0881e1633ee871baea9e6404c3e6ea4bfcade10d3c1410491781eed3022f5a2298e919e05fffea6383991b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}