{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "775894613",
    "entityType": "User",
    "nonce": "0x5847e613b23a275517bf4f2ba3db2b1880081561b330e41a9fbaca685cd182de",
    "signature": "0x6d6fb51849cd2e086196867fd43a3325060da5723e5108ba584008e6e0b301c7484d4279aff32b14cc8ee3aa64185ab9ec29b7373cbfbf6ad6ebd5dfc05210961c",
    "signer": "0x7407C72d291B1ac83F690D138D79522ED2B7aE12",
    "userId": "389295"
  }
}