{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "281557683",
    "entityType": "User",
    "nonce": "0xfdbd82b44bcacba1b60bc6d5c8b4bdcd71ca6d81f6c9f7a64efff74d43e6f2ac",
    "signature": "0x404ce90b81b111b64df3b1b9c3f4551caf7b15743940317a97f8c3526063e5b4202a790962e2eb375c50df84b4eefafd2e7175230ddf5c7e94ac08e3ac3e1c8b1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}