{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335589",
    "entityType": "User",
    "nonce": "0x2524b48020352f65627e432ce77301fff49de7fcf805519de85d86bd1b08578b",
    "signature": "0x16e6db8bea820b57da8b8cd99d351346fec2d48df25518faebf504db3a47b7d1665c244f906f07f7224123c6e167923966c6a54bcab1eadd9d3b5ad1a3ba9f031b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}