{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "278916814",
    "entityType": "User",
    "nonce": "0x291407e0b7a354f1e7b0d5eddd0b4e12c64768aea47a2a3b761aac0d950e3be9",
    "signature": "0xac3c9bc5a4e49e17ec353282b285dd29f1eacdcc502da824334c84784ce4764811a154324e595536351faa17077c24ecc1c55f81ecfb2434475d2a55417b39c11b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}