{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1921",
    "entityType": "User",
    "nonce": "0x59ff2b3ab5eca765a58974d60984921fdc67fcf4a4aaa8daa75b29718b5fb5e9",
    "signature": "0x4beae6e71350ebe16855ef9a165525b21def6d3f97bdfd8b5d3d719d5300386b35ceb95b8af528710330d2c942c7a2608b0489a19e0a0cdf28d73f39e73e7ea11c",
    "signer": "0x20Fe395061E06851Ee416aEB147c690057F23af4",
    "userId": "748892693"
  }
}