{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "771984",
    "entityType": "User",
    "nonce": "0xeddb8535cac2c9def80275b8d94f5fe68ab05b59ddfc07455cdb9c4a3258b090",
    "signature": "0x818211019bc28f77ac72abf106bca80ad65dfda0a669473518f060602f5a65df7a7cb7afc68ef3b33e8c6a54abe08f48b5f28d23e9a3c56bb690c0a1f58f30421b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}