{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "385781",
    "entityType": "User",
    "nonce": "0xd580909e303f78d7caec4b87159b99feeec343e91d6822cb4018968fcf32b4d9",
    "signature": "0xc1cbbf02d265bbb499f948370d277e94c2ce656d395c0b47c16a8e1484ca226d148e1c177962c93b846bca2baa3ea417141676aff0d8b48e7418afb991b3d3861c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}