{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4484",
    "entityType": "User",
    "nonce": "0x3cdf271ee88e7c69afc4fa5a6eef755c874147198b6b0720492b99299d44d894",
    "signature": "0x412c0df6cab7f2221ef6c0a1b1d1659cdcab0e121e75034ee4b1706f1d2b171750e2eca5b345245ee37ac32b80e9e5bc80087775e3319a4f908b7b774c9cc8dc1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}