{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x22a1ce14806e4676e3f5ac3f3b862365a4003c2fcda1773d8565a66e94219080",
    "signature": "0x99359719c10412cbf24b733982f03acb6edb39d48297b202342b1be1f4ffc0623cdb80877e2184ac583bcf8b0f6cba5d31946585ca5b7b7875df55ebbe1791291b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}