{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x46b2a0e4c0ddfd4251cc527e9aad38646ba1ef3d3977ed14ec3e5dd8186c35ad",
    "signature": "0x20ecaa55ba3afbd262fb34410d2c9d4a5066435757734da7ff1f833ec708254363ed73dc5507b0a5b29916aa14e2af0a24a909e3c794f47421b8e8f540a99a031c",
    "signer": "0xC514BF8450eC76F3643255F49FD795ce37847921",
    "userId": "638036736"
  }
}