{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620550962",
    "entityType": "User",
    "nonce": "0x465f9a517fa09790bb41731a6f57a0d187d211397cd101080586fe9ab1f88a65",
    "signature": "0xb19b4255cb682f3dba754c3d523010c2fc518b513fc25539f047660e4a39c64f53330865a3fd2c3baebd456a8a6e10b4ad1efa493223a3accdae92ae7502fc0f1b",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}