{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "188570",
    "entityType": "User",
    "nonce": "0x549d586c0191c368e0ff68660a1d1384e335cf68cc99c410aff88f3d75d015f1",
    "signature": "0x2120f20f795e3df87e278fafcf418427298621c6b10d29b8f43046a35b82b83d6181e4b310128de56defc73cdd1422bca353360d5a9a863b9160c721cf9087a51b",
    "signer": "0x391d46062E4C46a3D553f4EAbB624Ac752dfF1a7",
    "userId": "752113572"
  }
}