{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xb8705f688e9e577554f733fb7cf40148facff3391ac2877880d6e566d1523a48",
    "signature": "0x6dc4651bff0225dd153f65a183b6146c648471622b5556ec15b808fa0781f53451eecaf4634964379bd3526bf2820591769b35dfeea1d55b7f300d1f07e321bf1b",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}