{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20821",
    "entityType": "User",
    "nonce": "0xdf6bc818c9f9e520830cc1ad72638661137427dfc68ab3fa0d1ba3c0e9b417cb",
    "signature": "0x6d414862e9ef3c0395375c698c4232cf732dbef8aba944b1fb185d959dc64e2b4ed3ba46891e4b207324c1dc5902923086e1a98d896dd15e5b3040e2328c25e31b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}