{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337364291",
    "entityType": "User",
    "nonce": "0x56958e269be239d1f557fb55dbd1c2361a6db97d9827590392112dac70d95cd7",
    "signature": "0x9f21f891c57c8796656ca809beebba4285b71ac894824bf4ec30ec2b719f6ec31a7b28236779be2db6fe7a5cbbf008ce780e78c5bf2e0fa787f7f6ae9823cc0e1c",
    "signer": "0xE726D55D6940a70995Ce9D8aa1aCE76FC6f4f544",
    "userId": "285113781"
  }
}