{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "148429399",
    "entityType": "User",
    "nonce": "0xe8d24472407ef5264f9d4ad1f9f95906afd3b89312b8bd865408b513db330458",
    "signature": "0x4668b6612a9c4a94fa6d41342a3629e742822224b5a3ce46aec37213c612b6f536fc2c9205de76cee08da5c03114fd46453905ab7ede9bb993b673b97c8c3f101c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}