{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137845",
    "entityType": "User",
    "nonce": "0x1eef0c9443b566ccc7dcfdd56d0d906cf9ca02c78fe9fe1adb04d397e73d248a",
    "signature": "0x9624ca0965ea6ff5eff1709b5f83c7ab79b9420f927c08733f62acf481532f124d693a12da87902e0b5021239b8dcdf35ce677c8aaa78ea95141ed9981dd2a781c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}