{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57648",
    "entityType": "User",
    "nonce": "0xf84dc7260401e5f5550c8035787203def9ce5b6d8e749a3671e9f9e8a6ff7a3f",
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    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}