{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319048",
    "entityType": "User",
    "nonce": "0x8e5603c7698c0ec65328f186bc3c86a8040503e8f81aae2c0cd0b8a84414d337",
    "signature": "0x758cabf13a055576933728f47a8e59f7cdcf4c432f347d18361b7390cee77efc42128aa8371f5dadfda90cd1cbf47a4153d01c40d83e083b4b9c826d03ea1d821c",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}