{
  "manageEntity": {
    "action": "Save",
    "entityId": "1466177162",
    "entityType": "Track",
    "nonce": "0xb966ff235a717ca8d4b711fcb134458030ce1cfc4f1e5267608155f826fdefa9",
    "signature": "0xae8d216c32c7d7b7838e460defd8d4612c716267adfc730b364f9c71fd77a3022f97c716e28341535c1b4d26884ddf4afe85e4192e0397c992b75c6ed22e84b41b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}