{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1e1581cb121222e410c6e91aaf8b2e7adb997fca0023b8983cdfee7fef4fed77",
    "signature": "0x1f63a725452283a339fc0d6eb89893d9d724ab361a9c6441e0681a840b2a8dfe46975450e4a5e5479e909954bf666445723134ceaeebf6b39f1a1898beaff1c31c",
    "signer": "0xf96057D7c5a737443d6216D67a29B7c2fd8EE11C",
    "userId": "21156469"
  }
}