{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "868248368",
    "entityType": "User",
    "nonce": "0xe0e3e36ee90496e65d72294a1cafb6cf8d228b38797feedce6cb3fbcbdf994bd",
    "signature": "0x6c058c3ac21157530beff88468a6418f4f3119e03ee0b3735b14daf979062dd11c10665589c14e5af8e49c00694d6a3635e70c1865397fba6f1dd9522a88b8511b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}