{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "321366",
    "entityType": "User",
    "nonce": "0xc13ef380d40bf206972225f34c578a83bc7d94e363fff29c0e8abade3a3aafaf",
    "signature": "0xe04d6421c833395352864013089d69e146864cfe60869a6ef0a676a351b9ddea4d8fa1cd2d0fc469f9b0f964d41dd5f511ca95c613a1e25af056d8c7ecd0a4491b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}