{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "388772718",
    "entityType": "User",
    "nonce": "0xb2b620f40e930ed39154cbd8246ab2388076a68fff4801062d72c4249ec08e62",
    "signature": "0x6ee534a18d531b552620893f7a4a3699549b317f934d385c34f7e00b971021767a26109a52beed2f4d4753f354e217bbedc2d4f0dacfdc58308f5f44bc2a347d1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}