{
  "manageEntity": {
    "action": "Save",
    "entityId": "1192039533",
    "entityType": "Track",
    "nonce": "0x8b0845cc6e6923a2d080a38c786526ff89fc81556b3904cf1de1ca9d42a0cb0b",
    "signature": "0x1b2036d31969c70a80019a0e53191a8a8de5cd1f244513ebf53935ba225e7dd10a424e65d164e2447da23c7642a5e154eb1c1025dff547330dbf250fe716034a1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}