{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323170",
    "entityType": "User",
    "nonce": "0x38c57af0db0ba710a746cd985342a4d9c36ffbd8a4ebec13cdcba8e7d33b3dcc",
    "signature": "0x421ac0d5b172db737614e76f01c69e96cda8581e6e0ed998733b0994f0ababbd64f1361c386ab13934cadbcd0a75c562523dadb481d81bdafb310151a7511f6f1c",
    "signer": "0x8e57c7C677d2249437F4bEb640d7aEBAa88b9C12",
    "userId": "230723724"
  }
}