{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x82dcae28481671814db50f91f3f10cca20e59ad8c24fcf11a94b493a3dd2ebd2",
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    "signer": "0xB76D5aC245dF1BE4fB92826b9eCD595e597e3f53",
    "userId": "204545260"
  }
}