{
  "manageEntity": {
    "action": "Save",
    "entityId": "2031061638",
    "entityType": "Track",
    "nonce": "0x211fe0358bb86a0e124b02f45e92927945f029d647ddfef5b5ecf1ac700f3ff3",
    "signature": "0xe6dbf2df8fac5edb8c86b1107da438f2d3b80c1567b94cbcea28634d8fab70e25810f8c8d87ea3a33d866f8fef7998ed476b90826de01735388e6af7997f32be1c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}