{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "175571",
    "entityType": "User",
    "nonce": "0x2bc58118437ddee72477843df092624bbc31bd0b48d2679468d3da97de399270",
    "signature": "0x48cd07d57e151c294dbfd7f8d2a5ef194139fe2294d1bf69a8bb97e6bb56e2c479a27bbab7428c555d7b8faacc5055959167b7c37883794544e8c681b0a7ce381c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}