{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd6729e6cf5013cafe9376a98bae3c69d03919568e668b64c258a54ca0353fce9",
    "signature": "0x0cdae826a342805322c61ea08829ea238b9d51c697c647751759c0bb25cd88ca244a8262b796c3d73c55b7e782742696a2c4d3f397fac3d3c5696130725a85a21c",
    "signer": "0xa900b068954c988c4e1FA3E4D25af93c8aD57346",
    "userId": "368319828"
  }
}