{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x643c672fcca57de4301f25ab59e27b6e6fcc0a5ca4dd458fd80f0c4bcb5f4a32",
    "signature": "0x75650c37c58d0dbea9e9cfe7820ae71a8970c5a55f4f437ba00df71fbb211a52097e77050c5bf2325a723e3e6002ac78622a9e4a7dec0ada2b76739fe7aa41331c",
    "signer": "0x32b65D75cfE16eA219975213a981374A4aC2bf8C",
    "userId": "691038481"
  }
}