{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "851222014",
    "entityType": "User",
    "nonce": "0x7c45558b840361473614ff6fcc7177ec504999d25b608066404cad4de6079017",
    "signature": "0x3d600e053f6de8efb36f8792ef66dcf00f0abecec8ab1d10cefd6ada8455095956bc5a32755c1989967be6d04a770b82f90142dfb3c89aa1c61a5c2103fb33571c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}