{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398460",
    "entityType": "User",
    "nonce": "0x81b0debd5502897f681df1437f3e2ec52032621b44ba560e23bb871698b05d26",
    "signature": "0x1a5e95a79c0a3ace2f1a69175adf9c794b031f3c557477020f5947492581bc033862d7909cc4ab155f1be36c11b54c9936648aa17400443575e03ecd0a96f6d01b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}