{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "192199",
    "entityType": "User",
    "nonce": "0xc2020f545b4bfa3d2d18fd5b794e8c5d826d04dd6944de950c687e6502107b60",
    "signature": "0xbe57ca14114d3c777dd272f955d2039c5dd819596f208520b975e067f8d2a6a763f5cfb79d170dec20c8528b1e21e5427d1e65e363a96ded335fc9bc0782d3f61c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}