{
  "manageEntity": {
    "action": "Save",
    "entityId": "303018406",
    "entityType": "Track",
    "nonce": "0xdd0dee15965a63bbc62af872e541484356477f5aac6b39e9fbc365d4e5177a79",
    "signature": "0x10daf2dee95503525db0f5925f75d75667bb9b108c6be0f91819092654096d0170280c7f30add965427a4057969d5469cf9352ecd78efde6cb36044bef5ba3c11b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}