{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389958",
    "entityType": "User",
    "nonce": "0xa863cf78f5bd8a70da3b40c593b2f24acd555a5a8227e8997f8399aa6cdc8476",
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    "signer": "0xB83551fDE4C322c789781D4f10A3d0E29De29829",
    "userId": "561032968"
  }
}