{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328894",
    "entityType": "User",
    "nonce": "0x9f4d7bfb26e82311dfe22a60260f623ddf3cccbb16b12f8d2569155ec40707b9",
    "signature": "0x4531809d6527a86eed30f418daa524991dd6a8039d7e7769a7eb59292869e03d413b01e9f4e40487fbccdcc652fdf167b7716afc4064d2aed1995a0a3381916f1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}