{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "83745",
    "entityType": "User",
    "nonce": "0x2690adda9cf8c0d970644316d79c3f780b8af69f123d1492aef5c4c8e4caf06c",
    "signature": "0xf1b486cb579d5c98862d197fa56b39bf9ee89548909f2a3da5e76c1553eb4eb65e7e01f5227f497c157305af1136b25aeea72cdaeba152c29b105fe0c78204001b",
    "signer": "0x4f4C18220D065b5195F09E23993B70Faa751F0C0",
    "userId": "583021207"
  }
}