{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333521",
    "entityType": "User",
    "nonce": "0xb1396ce1f628fdf52aa965081dfa94e1a1737672f5118c66f685888f5385cea7",
    "signature": "0x09330b18acda1697971e18ac37b2730c535985d70568cc81847615f718dee133095ad22a7b1922f158697ac30752a0c519a0589e3e3cc2833753cbf9a85eb8321b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}