{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "593684426",
    "entityType": "User",
    "nonce": "0x42a8de40f960a8035d0d3eb6c2c1b5b051abb1468fdf3148026257f9d714122e",
    "signature": "0xd843467775a0875f1e43ce023e0033eb1b2394912de45265cb2d1d7a55cd100d7bfdcab547cc1ee05855c699d134cc9647e2193d514fa53649e827c8e6df24991c",
    "signer": "0xb15d7053c985Edf1d74fFc9893ab67Fdc2B33090",
    "userId": "211545300"
  }
}