{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774036892",
    "entityType": "User",
    "nonce": "0x7c63ebac448b3ab54847683509ca7e55e92ddae159183415508628c5970ea1b5",
    "signature": "0x07881288b89ae62e007f18c6da021dc1e6c9c1d9e3c1eac7dd9a3fe50c045d9026e44a8671ea3e9fb262f8bb3b5edce552dd27a8b86400cad8d1491ec7ddfefb1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}