{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x5f50add57f56b10a22912256a7b3f64974bf9e7697f9c14c947c346e609a59c2",
    "signature": "0xd4fd0f3f3bd88495632a3b7e860cc978463f8e64ca7ae8509499d1f7798977b432b9bb587f9c8344d92cc7ba0e41a46d119962f46231c141875d6acf6958f0051b",
    "signer": "0x849b8180f084363b37768C823c174C9786020A66",
    "userId": "817339612"
  }
}