{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121547",
    "entityType": "User",
    "nonce": "0x16b25d236e42044d8aded02c301475a259a4a099d15c7046fff2a9a529820507",
    "signature": "0xf9a91d58087533a41a5fea6c36ec92b9a534899566a4d397d21aa9e11611c47a11e1973ba3566fc8163fdd4c8b892a3cd60690e46dd41533033d02894b7fc6361b",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}