{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "536929244",
    "entityType": "User",
    "nonce": "0x68a0b81164b3b3d8aa7483efa7e0d0593256d7f17b6daac4e808e0aeadb83a3e",
    "signature": "0xcf57b88361f0c45d4e1240a62d43f994ed1f5c550e9f33af3e2e5ac3d0a991677273bf272a3ce12717e3f3afb94a379c450d868288bbfb8bd1ee27d068ca29d91c",
    "signer": "0xA2431a8293fD33C6289244D08A91489fF2C9f18A",
    "userId": "325308787"
  }
}