{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323361833",
    "entityType": "User",
    "nonce": "0x3f0e20446fa3f0af67dd6fc8eb91d58f26b58e7189410eab46debff4199ccec5",
    "signature": "0xb0338dc8da973e10b765ccbb2b181b849a86c5e534f465b6d54de36eaf7cf30a50e66a0eb91662ca58ae9ae9456502b2858680b50c36f435fa22329b0cab38991c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}