{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "528688046",
    "entityType": "User",
    "nonce": "0x33fa72cf0e45b06cc865f8e176a35bea0207c467db17eb429c46df8e6a94ba6d",
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    "signer": "0x866CB73184a8420C302e3850B610761F882C4DDE",
    "userId": "166428182"
  }
}