{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333942",
    "entityType": "User",
    "nonce": "0x81b848ecb435462706a21f39ceab7abfe39a079f1b227286587c2b4526e663fb",
    "signature": "0x29275b65c1411f917f4d0c04076b9ac9a83fae254486b014e33b1a9586a27c464b55afcbd7155a9e2e0303090c767d009c0878820133428a8c38a356993162091c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}