{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2304990edc5f1c6cd19c892d8f977afe77aebc30329ff34122773f4530497d8a",
    "signature": "0x91f49dc88d50d8681cd3f372dcc0f043daf967113730cf001674a0a763db019d0e44b37e79d9f3e4b038d93ebeefde15acf5dd5495db3f6d78f4528e0ef3eb0d1b",
    "signer": "0xc0ed13C2bE16fA3e734B60a8Ce3B2DC44ED89322",
    "userId": "940725144"
  }
}