{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4021a0b83498671687c53378ffd64a19a5df1abcd95ff2470008176c492d29b5",
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    "signer": "0xBdFfd8244e7bD07f7583E75F3763826F4C5C18a4",
    "userId": "937179560"
  }
}