{
  "manageEntity": {
    "action": "Save",
    "entityId": "1061196",
    "entityType": "Track",
    "nonce": "0x837914faf3ea8bb6c60cfdc8e5f23813bbe3a1deaaf5a013cc67aa76bfcc6707",
    "signature": "0x55b71a60fe24cd40f291ee589d1c2ec74ec981e40b69f9bb17c965f48e4497fa7c39618fd44ce4e540fcce9e4900449e66cdb4fc8e3fd393406da8a756a115581b",
    "signer": "0x849b8180f084363b37768C823c174C9786020A66",
    "userId": "817339612"
  }
}