{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x112e37da3aba10b3dc065eac092b8e3d3b9a330566341fd3b1ff723b0828daeb",
    "signature": "0xef167fa6d88cba8aaab015fe65919c3cc7cfa75a1051eed1ba8527f6c9225dca205c8e9b34ccbbc0238994273f8d0098ea9f5c19e3a4481b7f4f0ce11ab000c21b",
    "signer": "0xF8627E429A403b91c989b9666bE2168Fd2E467c7",
    "userId": "971403408"
  }
}