{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x49501102d06c97b1984020e6c8d063ff2f0dd656d06fe7c6e36c42b26d2af8d9",
    "signature": "0x3084ebc237ec10d5740bc02823171a3959ba9169ff35756e9f49665c1e2e046a7a4198ee6d28ede9c76d88596c73e56250e1291873af0664ab15691f16f4266c1c",
    "signer": "0x28b9f9197fB6fe7356F4228d71DCDD1C6aA3C8c3",
    "userId": "252398720"
  }
}