{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "386745392",
    "entityType": "User",
    "nonce": "0xa1e3b577966424b2a7cdb9185e1695ddbe0921370dee779769334b5d65b559e1",
    "signature": "0xd564a484a966c539b5f53fb0f4fc656ad8516d703d234c41e4ce4b4f0dbf3aba23f9c4cab8eea2dc14080b5daf131471401f8400f99ca5d4c2ea4724dc7cfe181c",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}