{
  "manageEntity": {
    "action": "Save",
    "entityId": "825828556",
    "entityType": "Track",
    "nonce": "0xcd4e9193acef6582b0c39d3a25b7f4e20b2cf702e30e1611cc497dcaa7aa0040",
    "signature": "0xae247fe7c801772fc01931a335f63b8c5af4ddd2d1be211a251b6f4952c6bc055fcde52b63c373843dc7b5251ede9e2db4b288131ac08aefc9f78c489175486b1c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}