{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "666092734",
    "entityType": "User",
    "nonce": "0x16c3802bda66649f94261490c9c3becf924c2759846200047bacd9b132ca4a30",
    "signature": "0x7f479cab1943d9b8a7c6c9fe32d3a436516ca4af0b5663dae0c4adcadff8d42421476e6af6da86aae8b886dc6453b7a24c37c981fd6e224ce041cd13c7b1d4771c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}