{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe8c2efd4148ff1ed88b0b3ea918d1f0031235cf2c20b0f1330a2535e417698a8",
    "signature": "0x7a2c339bff30a7c60f4ab171dfe2ca52c34fc1b22b5a3c534ad13d16c2e41a9f25eae5e5b8da9a65e66a6b754b545def871031b70373dcc47cc87af18c1617751b",
    "signer": "0x71A8b6263265F31bF93B5519CF3787Fa4A56e96C",
    "userId": "268524960"
  }
}