{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13747",
    "entityType": "User",
    "nonce": "0xe21496cd028a9da099fb612aacab647dd579dc8c0f67264dba1ad357da369893",
    "signature": "0x3f3d65a51e67a0f1d7601592cae51fadb867c039d3acd3e50b8347f81ee52b0a317b42d77e2084e685500ac4ec073535f500e7f5523ced0de8f3f22bc6a3aeb31c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}