{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "809958659",
    "entityType": "User",
    "nonce": "0x9cd48a6d8cfbdeaa693804f01e42ab2a90c3b4ae392148f9cf8d9ec4577d9027",
    "signature": "0x221afc546c46077b324f3af62b0c22a74618203990c8662fb44fb83d5e1f23465caccd4f8d2479b333a1d093524addef87ee32167cd10a498fb8257e5dd069e31b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}