{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343301",
    "entityType": "User",
    "nonce": "0xbf3aadb688721b0d31d148366faf1fafbff5c8e3b7a0b3480cea7882d5ac45ef",
    "signature": "0xeb9f0bc4c639b094ced74fe5b794acaf18ed286efa13efb13b2e1abcf26d7ee134867592b0967e79c13115aafea4e0deec6a39f47c307e98d70967269b30c3f21c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}