{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10668",
    "entityType": "User",
    "nonce": "0xf3904116a9f4f83bda95f69cbff4f8bf3a26da65110a14bdd32e9f54bb30935a",
    "signature": "0x704f2496a68d6da247791459e8b32fa8cac6d3ae2dc9a2114f880e623f330c2b4ed0f024c5fc61b0c0a10e8e012fa7fcae0bc091234b6f0feedd2a4648bc9c671b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}