{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "298766",
    "entityType": "User",
    "nonce": "0xb6349d0c1380a412fc6a81afa54ebcbbcd24e5d63ff98044c5a4492e69de3afa",
    "signature": "0x49197eb912910e183b5a9fd479a8e323a0d4175b02d08dd3f5029d442b81736d266700d18465a1a2dddae5b8d10c819c6ddc6ca3d80a75f7746988b1d7b889d61b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}