{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51449",
    "entityType": "User",
    "nonce": "0x68df9e4a11ca2c26446f420c68c46a7c51baaf61c93258e4e3a352658409d0dd",
    "signature": "0xd48aa94faff1572ccb49b72c34f1237754eddbc9624a67dc6e44dd3601b750e27af331dc0fd751e81e0c82bb5efed8449cb79cebca5777ef71c49ec6b88d54cd1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}