{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xf6052e4963444e1bdd7b9046184e3aa17e907be6569b240a69c56cbaf694702c",
    "signature": "0x71b5e6cb28171110cfaf083ca4321f803c175fe2ca5e7a51f2dc2ea489b50f2b39126b9658e766cda651c642fead7bd417d6ec4b1f92b2f6fc56eab72afbe39f1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}