{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18192",
    "entityType": "User",
    "nonce": "0xfce401c3975095435d9efef5640a6e632c8c2986d7ec42d53a357fe7386e0f55",
    "signature": "0x28134a33912d442d8ed7b72a0977fa7a570d541cfd9e83fefde3dba7d6006554466e4f4e70cd7ff32b8304c4b05d362e7c3fba40a4bf33e09b5d08f6e38b8f6e1c",
    "signer": "0x45dd4B563AbeCaB329e918D13925cDdFBca768C3",
    "userId": "265042309"
  }
}