{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203774",
    "entityType": "User",
    "nonce": "0x5da1245769949b38de7df941323cd73652e59471d4a2273cb46761eb4b27281a",
    "signature": "0x0cde04efcd295d8e8f6ffa4a1884e4868b8d741ed88fea00acf0bb32ae9bd95e46f64c0ed4506dc81d811c5bd8bae886181101b303181b0cbcbbf34b4bd2b23e1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}