{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xa25f33780826ea0bea89065b771c4b910868172f69b8427467087911890fc12b",
    "signature": "0x21b39ab91dafa8643394940db494536a307ad7b4ae1e51e9fd1948a74aa088804a9c3f882a00a508c974dfe5f8aba98aa3747662d85c873a37de2b1028f4822d1b",
    "signer": "0x7ceA71B4A8C4013A4f57c1A57eC0430915572e86",
    "userId": "31724295"
  }
}