{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "765901034",
    "entityType": "User",
    "nonce": "0x78170cb66cfcff3064fc833997683d4d0569833639fbb8aad338f76abffa1a26",
    "signature": "0xc048ae28f9c93973602c099af31f9c689427773eb48d0190236845e8736121323b620da293241f289fbf0d9b3519d9bc7d8ba82b7be19e7d142ff53320c42dde1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}