{
  "manageEntity": {
    "action": "Save",
    "entityId": "761031007",
    "entityType": "Track",
    "nonce": "0x7ddbe051224170d850f8f881ebba721ebcf90672d3e558dd0b45322a37809aee",
    "signature": "0x1d537194cc754ff127c8c0d13e4c1fb6fbfd2409b5db1369175ee658fac0614c23bafc7ef02f4920b386c71ae9467a4bd1d175d8ef3f06eabb5447ee7cbec2691b",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}