{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354908",
    "entityType": "User",
    "nonce": "0x2c1be0c58b6a7c4a46920255dbf6243e0984b66fac9e5b54d38d080658f65167",
    "signature": "0x87f317ad0041625e6502a61c399a3b4e8ae105a850e88957f80725e233b670aa12ef42c40aa4fb95970fdd46bd455bfafc398c61b5b1a0c64efaafce57fec83c1c",
    "signer": "0x997f52c4af8280b4e3F3F5A559DC3565DC8C8fB5",
    "userId": "337364291"
  }
}