{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64433",
    "entityType": "User",
    "nonce": "0x1d088246af05fc32c4242b009a1be578f098ee1c4224dc924b237d9c8b3150d6",
    "signature": "0xc4ac62d3c564303594fd42b1d89631c7f9c4746b462b258f9b92f3e20364c3206e8d3fe64c7eaf9daf6bba6221112e7f3aa69a3fa2dadf581a42b9384c5cc42b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}