{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x43fb599ceaf8f65dc08e56a99a4d39fea7ac1d86626da4fab3f849a700063381",
    "signature": "0x6d5f409fe30bb74f459113d71811954dac3c568d0275e0ac23f9419c4c2117235f8d809629598a41cf26ea355c40f800e82c0979ea16a892a6f468b325219bd71b",
    "signer": "0x9acF8CBE8f2B0d51e756C58D6d1f946A8757602F",
    "userId": "428941685"
  }
}