{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdcbb570b06a566eb2e473dff41233096e3cad590912a2e501ca147c5f84dd192",
    "signature": "0x331020cbc1982fdcf280b53e2f1c1f54d1596f6c4c469ad4cdad2c04401f2eb21655c0803ab25ae9cf03e6efc4963fba99517cfe765eb50958cc213a4d7d1eda1b",
    "signer": "0xE17AB4bc5cB692467b5F0ad1DC706e7c90eA8790",
    "userId": "198865127"
  }
}