{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1572212",
    "entityType": "User",
    "nonce": "0x722b975b400174f50cd9fdb375703df99b0974221effd885e42df6b617f9919b",
    "signature": "0x48705aaf2b81052e58b785157612df7efbb35094ca999e7af249b64ab75078d740803e0455fe75f938956b18087c323798f4459527cd7ff378d7e971d0e255d21b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}