{
  "manageEntity": {
    "action": "Save",
    "entityId": "368340",
    "entityType": "Track",
    "nonce": "0xf29139170f889c9872a4a1330cd00b2df8f361eda5ca953a2aeb071425522fee",
    "signature": "0x75970ccfe4efe0c2e7f2ade0fdecac3d0e4d02cb75a0e72bfda7235842227f676ebffcb89b741e7c1e99deee3c573121c1f272e9b58508cd7bfa9bca2e780b971b",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}