{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x67be7e48bdaf45a363bd2ae92f145ab4eaa246238af93c6679b27b60fca5e600",
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    "signer": "0xB44FA70A3CF753312E4170e37394A9CBCff27789",
    "userId": "59026063"
  }
}