{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "939139241",
    "entityType": "User",
    "nonce": "0x7ad57f147aaedffeaf095ab8662d52933748d44dfc88150599ee3e6d66cdb7b8",
    "signature": "0xb5ae6a435cbed44587a0493c0b28d382700b743ce71836fe4ebaf39d35a3f7933a178a912d25e9255eea95d49d071365f64e9df53be6580de8ae21614f9245ad1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}