{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "157477",
    "entityType": "User",
    "nonce": "0x3d878ed9066a09a6715653a464996a6c30f0998247ebc0d2b3011b3c55cf57e7",
    "signature": "0x339b7534319b751dfd2f62bbe5f1d3ba0e2bc160cc5effb89aacd5ec112446a20c9c3e312ab7e6cc9944a5b820a29b92f53e623a2689be80bf73db1caa02e1011b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}