{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "56537",
    "entityType": "User",
    "nonce": "0xc434725cd9451c348c081e4f72f5d07e33b837a5dcf76fab1151d522bd0297a5",
    "signature": "0x2e9ac3e9738d79a6d8223152d6cb0c8390026c86830585b7bf59c3c69712d79e3282e722824e257e0716c72640469e5ac55b2f84c2bd979297edef7e7d067e7c1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}