{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xa19d4c9ffac2ef69e52fef1757e0f0c78b862ebc21ca80935716dc988e062baf",
    "signature": "0xc3fe4c06111c1e8eda03a9180b9467c62477c77f6ee9e9af2d52c013e967b04b1da413aabc2bc4dbef464e19317d21a844581921f3adbc7d00b2e6cc0d7c722c1b",
    "signer": "0x7cd25FB30C9BeaF3A4ee8191d57bB6C598D317CD",
    "userId": "757352381"
  }
}