{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "725379",
    "entityType": "User",
    "nonce": "0x2ea73bce44df9ed0715cbbec61a75d3d1929e271b138350bf7e28ee949af7df7",
    "signature": "0x12ad1bc610967f8a14e4617b41dec87019aeef6408a1be1b8676327b5dcbca552b941f2b0796f2a8a472e5790cbaa297b1a63f20aa5fa3484b6c3b1e45c546891c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}