{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "256479919",
    "entityType": "User",
    "nonce": "0x6b8d29e7c4cbe6cdeb0ee7f67dab104a21bde8b5792408504de44a3bfb269c24",
    "signature": "0xd82f91de3fbe67842aeff2f50ab39267097c848b83105696ed9a3f0fe4cd78e042ffb4ace695ad49102d94f05bb2fde37f847031722cb19e7cfc9564c533d54e1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}