{
  "manageEntity": {
    "action": "Save",
    "entityId": "1423435925",
    "entityType": "Track",
    "nonce": "0x1056bef9614a8d7a0bb0316f6ca7399371997983c3beb64ef584923765406158",
    "signature": "0x6a57c06402c26c175354bbc236b3870be3f8815df48aa58cb7946bb118c0f5a6215754c3f7c8838d6ac3a8ef3fa2ba4a600b37ce47ac5a29433e5eac3196d60d1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}