{
  "manageEntity": {
    "action": "Save",
    "entityId": "61658",
    "entityType": "Track",
    "nonce": "0x94f7475d807fe91619c4f0ef156ef7f67e1e9dbd5eb48755841e86b69fcb3301",
    "signature": "0xf0839341662fcac63679e3a25df6a6d34df68c2153d0c17f4a8ce911ce7604e416267ce3aac898fbdcd8f1738759b2e14b56818304cd3d992269dbd3e5d0d0ee1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}