{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1036471",
    "entityType": "User",
    "nonce": "0x6515d7fc41099427840b20d4abb58574eca56348c6b1cf49ae7e3ba55fde0448",
    "signature": "0x1e512fa1569f692cb11c3a47e1dbda6516d8634d5fa97ef5db2ad6838b31325a5690e35e88971e27735f0215d105f4f5337c3ae743232a04421b19aa675e633a1b",
    "signer": "0x4391C746E11181B87164C3C6DcB2EA773D749ECD",
    "userId": "729432364"
  }
}