{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8c66a8c854e9143e594af10f39535b53e6523db1517d330b2092050a91f7d9e3",
    "signature": "0x1f776f24a999a4340ae9d925d5fd5866c0bac8362850c751929d4c1101673dd73276c3c938d209489e93d7a21d2eebdb644f511f5da1e62319960888865488f71c",
    "signer": "0x3A25162935B033F53f1C057B6EacdFA4472E0400",
    "userId": "487939004"
  }
}