{
  "manageEntity": {
    "action": "Save",
    "entityId": "43127780",
    "entityType": "Track",
    "nonce": "0xb81aa78c4a73c2d365a3ee62f1bbcd01bbabcd8430f8aff62182ff644296c234",
    "signature": "0x9e3ae4c1b442f861325411ed2ed0492ab96e3092932bc9a0517f9530e8e60cd062a5642a1307b912330650b6d49386ee4688cb9f50de61aa13c4e7bf23d8394a1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}