{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xef155ffa7811d47dfdb1b2177fdf329c79c926c84cbae8c6b050fc56d14abbf0",
    "signature": "0xf2bc30b984a60af305951a807e30c45c4ef0be6660924675ed53241c509d933b63bbcb79821fa461eb61c4cb482a45716d20b763d586144dd50afaa156c605b11b",
    "signer": "0xAa41F58040c332bA099e607a94e779E0eaAd70a3",
    "userId": "256614453"
  }
}