{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313481598",
    "entityType": "User",
    "nonce": "0x01231a880f058cf749e9c986b79bbc964748b60947fef9a05da04f7478a4af12",
    "signature": "0x75746164146aee30b0be38243f33d9edf9c06b9962e206196d0872d76291a36c59b89e47e8c0945d2e44c6eb6b61f8a30448c29779c48f99dd9bf408f9c546d81c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}