{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397473",
    "entityType": "User",
    "nonce": "0x0d386d4fad057a01250acddff8cba76b994673ec2ab6adc7f4613a1288a4f9da",
    "signature": "0x5e2d906f0c6121ebd08d7806f5b4c48c83efa6063928002e8fa553cc0c9909e70761919e4f8ecb967ae494a35ff9c4ffb5e797829a6c4191cd1f4ef7bc88e39d1c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}