{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x217b1dc475519053c185b4d5766dfefdd0ae86569569951e853a2fcb6c036a55",
    "signature": "0x77870f13a1cb7183ff733ff957a55cff8a2daf6f447159d5f1ecabe53c6270c519831ade61d394743d0870d3dd24eb2def2d80ff0d36d77a1ec5f4f8c30eab741c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}