{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "66328",
    "entityType": "User",
    "nonce": "0xafd3989e1adb4fb394843528150e44ca1711d39a492785d5a1672c7efc54f7b8",
    "signature": "0xbfaa661cdf36b8194d5f5c1cfc4eb08c1bdf0fa7f8ed908058439c9a9623631f55c6a17a5ad23dc47aa5367be24bade33f4b71fa8d005ec0df5c1adedb0b26f21b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}