{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "727493",
    "entityType": "User",
    "nonce": "0x8cd514058a4754c5706b2c67ac900e3b715148d6e7b4e6ae54493279bb3a0971",
    "signature": "0xc464130b68a8e81753ca54a2eea611f558e1b2db65f773e3cd5682ca7eb9ee215caebb1aef5a18219675713181c4a83825a75b626c2fdc82ee6e96ebdef2e3be1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}