{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51888",
    "entityType": "User",
    "nonce": "0x31bbe44bf9c723bd3f683d345eba9339511d4f9ad3d30ec2864f3775406cc804",
    "signature": "0xb8abb4cb3e8553e2dc5d16e5bc015d3c94db1b0b2d93d09ea8279413507458931a2e18291a6c5c723fb3f65d4e6abbd2dd56cee72e40f6402043d3d0489783dd1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}