{
  "manageEntity": {
    "action": "Save",
    "entityId": "701302",
    "entityType": "Track",
    "nonce": "0x77c79d981aba9643e9377ab3fbeaa7ec5c5369d5a87aba661f047cd574ce5c9e",
    "signature": "0x88c13f07df53f48e48fca9f8476f25211cc58e24afd584fe2dc0f1dc49f30edd77753f690a93c6bf57f36ea230d96760b0527e6ab1416d3b3e26bde8301d51271c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}