{
  "manageEntity": {
    "action": "Save",
    "entityId": "11464",
    "entityType": "Track",
    "nonce": "0xd1bfe31042413cf55a294d18d3a60f4c37db6d1b0a07de19ae3f55dae82a75c2",
    "signature": "0x55b45db7b7f503578f3094b9b9ce2952db42c8f041d963a44647fde07779c28f296651e6539796ee028aacc5869826e35be5a3321f4ba75d4f978f1f639de7e81b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}