{
"manageEntity": {
"action": "Save",
"entityId": "1801930125",
"entityType": "Track",
"nonce": "0x1d780100d9bc150d58e4120c87fc93abe9f957b4f0425f987fab1341a3d3d92f",
"signature": "0x2a2337a6c3d073f710434a17545405f380075a5077ac19940c5931309601c7a22e018e88d243b50f559b5127751a5020d2601d8fbb73637ca54e88653478c6161c",
"signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
"userId": "854614078"
}
}