{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "331",
    "entityType": "User",
    "nonce": "0xa4c2a9ed67968ce4aa90f64132f73e613aaa882da060ebaf37f0d8552b00258d",
    "signature": "0x0b9b9dd9b562baddedcc72414456f1a53eea05645e8b9bfa7186e69cdb7dcca37b87848a6e516913a6f9050fc5c34548f95081a7bca0bc458410681f5f4149d31b",
    "signer": "0x2F50f86Be5E8E960a8A80aff85106ed93A2c681B",
    "userId": "778093041"
  }
}