{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305092",
    "entityType": "User",
    "nonce": "0xe75e7c4b980404bb06e96f7d1925d6d8feb3fa4f40f54b470e53e536e1ae5d65",
    "signature": "0xe1c9eb5bd35ebc15bcdcb5338582a391fea4788058b0b96f11d00e390e49e65234f27eb9c88bd315c33093c9dd26fce8db3b14a618860076e5b23fc7ebd9e68e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}