{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30849355",
    "entityType": "User",
    "nonce": "0x3d7cc53d0fd598627bf1d19576485e270635761837b972f22aceeb1bd5ea176c",
    "signature": "0x3c289b1c057231bdaea9a0adde3d57577852130e45920ca0b7c21860bc80bb8c2d2271563fe69be1324f8e68beb698763950ab2a38c1678d9f417873f1c8c8421c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}