{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13721",
    "entityType": "User",
    "nonce": "0x470c08656dd80f193472a422ca2b09962dd5a80fffb337d96c3132465a370da5",
    "signature": "0x73a346849d94d8cf2a3baa2c2dda4bf19912d2f422fe87ac0d1e37ef87b138ea5a874529fb7025ce473243a68ea22e15f8bdd724da56ab4c9bae053c2fd7e0261b",
    "signer": "0xec083a3c9f7e847f8676C7CAF29E433702FB2CA5",
    "userId": "224487861"
  }
}