{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389958",
    "entityType": "User",
    "nonce": "0xff45e181676bcf1604c97a834a8a80d8659b926bef99898aedc2694898fde4a7",
    "signature": "0xa21655617bbd3d8ad0b81b777f245bef4cc33616b6f0da96d251f2ee03fb94dc6be66b578bd47d92024e3a542b5b5c9987867a8fa65ce8278134ee6df125b3151c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}