{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8c2e1f6e59fc0b76cc524fda5e07bf46541bd9d4e71f8d3ff3a802ec2db891b0",
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    "signer": "0xBcF71507ea14f83a350d69CDbC9ea4c51723bb53",
    "userId": "93746565"
  }
}