{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1777",
    "entityType": "User",
    "nonce": "0x85244d61d93500c11509dd022a031ee56de950b0e44d4d9d652316584b12ec5e",
    "signature": "0xf530d02875d5c44ed284b1b4fb991aa5e296d859d030bf1f6ef59c555a6681aa211ae9099d974a71d85652f4a291ce5b506d5430e9a8043bdb77174f3e2f70d51b",
    "signer": "0xe74EA561439c78F34f4928Eb44ee8Bc5d67c3d45",
    "userId": "781858883"
  }
}