{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64259",
    "entityType": "User",
    "nonce": "0x3ab4f539dd817285dfdf2bbd071fcb7d70c15a65a54d3648cc5620e03f3fe2bd",
    "signature": "0x5ee219598c5cba8bbfad7cc65dbee6511c0476c2fe67b2bcf4c163ff8e2954a95e906e96609c90d11705be175255e73f82652fbf0f332caa6e6b780a3e50b58b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}