{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7be9e53752a4ddca1cb7dba8b983f96b2f947b3f2d308a521b5493df5627d2f5",
    "signature": "0x3bdb56cef16ed1f2f552306270094e98af22a7074bd1993a00a825f159e7cc7012ece8760fbd752a1a0a6a5c591271f40eb366ac28bf3bc0e188e34c9b6e4cb61b",
    "signer": "0xFD38001fBA4A5C9a6b9302C73A7F50f65B306dD1",
    "userId": "731857092"
  }
}