{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398267373",
    "entityType": "User",
    "nonce": "0x9015c1f3e36aaf9601c46bcbf813a7a962882d7bed5a4fefa2c14e8001af5276",
    "signature": "0xfc4e67f2e50cab7c7149c9d543da82c2ad30a4a4413c8872d02f91211ab849303add5233c2e606aa69899b868b9a5f77c374e04f3dd9c3e766f43ebdd6143cf11c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}