{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "22770",
    "entityType": "User",
    "nonce": "0x277a64d1225cd63d2d03906fae83138670eee4e147bf395b2ceccddca1ae31ee",
    "signature": "0x8408db734411e6ba28a5e3d7238e0e9335bd60e5d1ca12440acef6f1deb81057457a2f19341d4ff69b828717aea21ec7f004875eb2016260a6bf6e1a5541079e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}