{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5f45cab3c4c6f6f2e4dd9c331736034908fcabc35f58758eae41a451bdee8a19",
    "signature": "0xc8d461de74956ccc0fce56056f81802751c8a24db75de3cf3ca3e5d94958cb7e608bc3f9b1a1379270a90747544aed2eb4258154795950718023d36a2010e6761c",
    "signer": "0xf3DD91912C819414c9D62Ba2c7abFF8adde8c542",
    "userId": "132265812"
  }
}