{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320009",
    "entityType": "User",
    "nonce": "0x74f69f76fd7c6b1c0211f847b7c7d1d661eec941f2b7afb143942063304360b8",
    "signature": "0xb729b49358009856d8a855020e3415b49001a9598c2a3cf5bb8d1736aa70d431403faa25a6d50751285a895bf83745538a5924a9430aa4d66f24e446b1159e7b1b",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}