{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x7be6a694bfd647f00b50fea8aaae574d1fc3e7609bbef7d3c7a62552f26f611b",
    "signature": "0xddda2e58f2d107f866b6490d8fbc7c57ceeaa473cd632843a5d25efe705cf98e18475ea9137de743cd8d9b4d54fe938f284a9693fba49217f3c950c81c9daf671c",
    "signer": "0x5FB1dF0c125C1F3cdda251a598Cb878a0A390F18",
    "userId": "25189733"
  }
}