{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75778",
    "entityType": "User",
    "nonce": "0x949432c93acd5e9d9c4d96050d4b894b1bebff107495e5e9c3568f9da8da0d82",
    "signature": "0x02cab264d211bba562e2013d6714c5401f380dd42038e7b60b1eabbc15d9537c6cc109d40629e07f8351baf38ca17191f8947767c627fd06e0a81efe234df8b51c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}