{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329513359",
    "entityType": "User",
    "nonce": "0x66321cf307558d1fb7f048b89a51879a36ddcb3666a421de26f3b3667f0b6121",
    "signature": "0x1e87f4baa2787dcc81b465dd1c4402912f7100d3ef31c41f6ee170198808544e0f7403a3ee10dd1e8131a9e4e284b1f6152bd6513682b937906665e53e4e09651b",
    "signer": "0xE4c0c73a0c0CD7f65f1bE942f8127c8753aB89D9",
    "userId": "857284925"
  }
}