{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "618242981",
    "entityType": "User",
    "nonce": "0x917c3083d723b83ddd7c6737329b74fecb88ed7dee7a5912be202661e68e7468",
    "signature": "0x6e25393d536bab3699b530213c8320fa50ddc3cb8befccfdb19f20341e9b8d3a6b2d23fbbe5bee4cfcad0130e76ecf41b84ee9f7e69991248fb1b6309574eb111b",
    "signer": "0x0E6Ef8dF2F401D8918d603B82ef321D94A721556",
    "userId": "648802251"
  }
}