{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "350820",
    "entityType": "User",
    "nonce": "0x8ff5b9fa5bc65600de62be8dfb77c02e839a2a255951c2910abbb326b9a125b7",
    "signature": "0xa0e01d89d73a91ef5a9c9a34c5f2490f44a94b1b809d949468c3558dcd32e41f4e9a5cf77e1cca6e4a4b36769dc6310b8e100e32f25feb43edc3f0fd6596a7461b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}