{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120120",
    "entityType": "User",
    "nonce": "0x411d128801e52a4dc1b068689f8b3684d958fde5dbbc2a085efe1f1fc777d8d3",
    "signature": "0x508a1bb586d8faa69ef53cf082ca1035d34fc99a2d8993cedadc6e4e39ae2a7b28695f92e33629ab9c941096ab7d54fd9b043b5ab55f06d2f74df8dd69ba1ee91c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}