{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "218470",
    "entityType": "User",
    "nonce": "0x73d67223db6e91b03c38f5ec320e72c245afc87dea747320c41fc2d4c4f3c960",
    "signature": "0xc8c5aef8da62122400de03f485c451d708fdaa8180f8df025e6ad76c2c436135166010b70c2a702f06a7baef9c91110ce285a71e61b75488fc359b570b9dc3141c",
    "signer": "0x5d38Cb184274A585dC79f62FC669Eca2c573005D",
    "userId": "867710486"
  }
}