{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54120",
    "entityType": "User",
    "nonce": "0x77e1bddf81edc56bbce3f9abc4b3e48fee06f9386415dae5479a504e061ee467",
    "signature": "0x6caa067efa8c2f959d68408b9c90031f44fa172218392d461a6328750b9eed451b206c9c79844bbe8050622a7b3ce713472589efddc305ad8a1e43863672acb21c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}