{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0x821b54e5d34f9879cf3c7e8d0b2dd53ded3e0877454805968c60ae354d25cbee",
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    "signer": "0xD71D6a61b797d5436c8d291306fd7DbCe6257Cc2",
    "userId": "117522"
  }
}