{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212492",
    "entityType": "User",
    "nonce": "0x65d4df5b6bb2745c8350a7bc31befa1ff0f66bd821d8aa2f0977b05a6cc67e82",
    "signature": "0xd4231e3c890867ad67fbae37904e455e5f8b44e71df6abe727c0e7f114c3294327e23fab17d65ed843a8851daa8a0979a66fc105dc4b975d1fa32003bdbbd42b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}