{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "416239376",
    "entityType": "User",
    "nonce": "0x2539a64467e0434b0e24c8d69cb7230c9c06361445071aa73caa458bb9a9576f",
    "signature": "0x6070d7d48921a5b444981de5c61dad428af7b25be08ed44de2a70571dd323e3f5f58e24ba23126a47468acceacb592a6e04807dc4df286682ffa09c8ecdd597a1b",
    "signer": "0x4F8e40E75E675f5be20520c4cEA0CbD7bBb999B1",
    "userId": "991796067"
  }
}