{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1913830",
    "entityType": "User",
    "nonce": "0x07818c441d06e6ff31029f1f336415d90c66bd3fd965f99762d0f5604da4dd72",
    "signature": "0xeba1cba9b70ba03b2ea16b3fcf2775b0d2d5ec0156bed462a16f089035341b9c1b133a417ad6e6bb69bf67eb3da836a8fef83070f769aa2cd62b6b874f79ddeb1c",
    "signer": "0x380Fe18384267CA159c9Db6737B959099be2a515",
    "userId": "381292764"
  }
}