{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "149665",
    "entityType": "User",
    "nonce": "0x4d9f30b7c8dc31a1fed8e4e5447e55b1bcb5d647aabfe5765d1f824060f954de",
    "signature": "0x0622d6deb0ef8cfdb85aed002a07bd5c1a2fb6f1cf73c0bb8e52063f9e504a263ce4396ce9d6860ef65e2c751cc094d5dd867c63657d4baed1f657635028d0531b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}