{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x8c2803bad84d3b34f846810958f310f57f27a1f7646cc56c34500e2260bdd14d",
    "signature": "0xda2dc4f867ab1ccb04fc50e7ded379c1725692b3e407e460fd52a23aa3b37c98487d1c4a0b24ecddd9318106abcf6561f454ad72e3cfec232a8ea8e5a76193b41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}