{
  "manageEntity": {
    "action": "Save",
    "entityId": "1324984135",
    "entityType": "Track",
    "nonce": "0x420af06b423fc2854d8672753fa3c7c5b0761189583764ebdebb5d065bb804bf",
    "signature": "0x79617438952c251f641435f86da30db463caa400ce0dd402343f0656a6bb4cf42d35cc8e2ccfbb24b8242c241f596b3e7e82035266b242284e2a81c24cdf72451b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}