{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xfdebfc1cb6dd66721e96d80c5ef07a798f924f6de3a8091942e2096307616d25",
    "signature": "0xe75266209463839ea7d66ff92933baa9581b17f4d1f83672b5751eb1db3578315686ae7facadc6bf6e85e58a26b16e767405312c5b53c7269367d3f96348ae341c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}