{
  "manageEntity": {
    "action": "Save",
    "entityId": "1218347261",
    "entityType": "Track",
    "nonce": "0x07b55c06fbe7242cb5ea40c1047f2c7ca1c66012c22f09867e8f332e0916415e",
    "signature": "0x00f28732586c695629755e384a25e576e83ac7d1d801619fce08cf0d169d8a573969602d1212f8f4059f16a78d66d44e2eb9d59c55300b4de8f02b1e4a2d58201c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}