{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "11999",
    "entityType": "User",
    "nonce": "0x9135c48f938fd377dc0be3a3e1ef611925fa033d010de489e4df0b58a9e2c831",
    "signature": "0x1b3a6627fbf400b01ee9d17fb427ad08385e255c8d1bbede6ae73e7cf7d3f82606366863e4015e0f0170a831b512b414630458f59cd00951c9c834965921e35e1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}