{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "954705651",
    "entityType": "User",
    "nonce": "0x4032b2f8ff99230e14abff2d369f8bb20ca1e80bcfb5c1af3ca3a7f9406fc03e",
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    "signer": "0xf76Be3e57D30ebb176cA7D31f49157c7f56E6b0D",
    "userId": "204302128"
  }
}