{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6697",
    "entityType": "User",
    "nonce": "0x546e203abf190825fb5d0cbc540cc90f9f905902d71b421b95143d2e0e7fd6d1",
    "signature": "0xc5b87fa2e76aea55360bf38034b14dff3dda35b788079513b3366fcb97c3e4f321ccd7052d69fb13e229bd80e712e5e43907dfd9769c1f8f280c61e539dca1291b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}