{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb981d96641102ca219cb769dddaa126b837a8c97d7e2d2891024663598295f90",
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    "signer": "0xD24464524E12283eF023296E42b09C340f62dBbE",
    "userId": "957779815"
  }
}