{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6de586e36fc034415cbe4d1d4f4aa795ce0293e32837a777e8d7bc186a466d8e",
    "signature": "0x972552fb0fa97f5522c4ef896c5d61d37e528852a7e003caf7f642415e5ce05b7ff3bd629493394418e7a4d2f60942202b8a1a8226ec9c3f5f6f32f8d41bc8ed1b",
    "signer": "0x37c8F7F4abAAC73229856311758649fD92A26003",
    "userId": "674712349"
  }
}