{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450",
    "entityType": "User",
    "nonce": "0xf90b7ca5a414adb294c46e5ab47d5e91b0b154c12cba486eb0c72d9c775b6841",
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    "signer": "0xC90e14007305577f04e5F4f5542B2191bB2c7394",
    "userId": "1856608"
  }
}