{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "199965",
    "entityType": "User",
    "nonce": "0xdb5ab7c40678ec7821a0a5cc831fa7e190d2f20a87b0cd19e1614af0641d4f07",
    "signature": "0x6f1db6ec88ee12eb487a3d73b62b3f60f24c3e720ce675f147c10b9221c3efe924f5df1a4593694d68d7ea5d7410cc0e585203356983187021181c0b10d1bb451b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}