{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "999692142",
    "entityType": "User",
    "nonce": "0xba0400a77dd63710cd91a9a82d79c3c338cba1b89e088e8f4f4a9f90a6c58e7d",
    "signature": "0x2b4aa0fa674e1d5b4d91e9d4437363cc047144bbc611fc7329a6fedd300074a972f5963d1b7a638ab69d78f922e2ff12f5e0ba413d794b8877dfd5b82986b9381c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}