{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "524124418",
    "entityType": "User",
    "nonce": "0xe28a707283f776adfd4b659e526ddc69beddd056ccb267d7a6abadfa512ce3ad",
    "signature": "0x920dfb7138d1c05dc3fe08d1736a00e8ce90ee868bd10bbd5c10ea3251608a3e38ed519079e28321d7c657dd4de759b561d0ddb47ead2358957e4ec6aa22adf11c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}