{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5552",
    "entityType": "User",
    "nonce": "0x3667202560062a277a56099809ad6b9458b3651a594335f3d9ba496bc5f77acd",
    "signature": "0x1e6646f3653ccbe3c7cb0ca0c77ea5f2ffafc5f151d38231d2944c20778103b90643dee6a309ba4f177f3ad4749e711748f3a1ef69defc2fa1e2fc597888150e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}