{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152473",
    "entityType": "User",
    "nonce": "0x7967b9197b0ee9be288584fa8275b3378c2ea2add16ce1b2ababb6f64a5fe443",
    "signature": "0x8bde76c28137f822dee6a1bf7a914cdcc675229fd1ab26d8d7171134fed4555e50de5738615fe6e59e731a3ecd3121a30f9295b4441114b706b1ba36bec258931b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}