{
  "manageEntity": {
    "action": "Save",
    "entityId": "351343",
    "entityType": "Track",
    "nonce": "0xba6ac426e36f381309e4d18868701814a3bd58835822c4b9f5954a4643466dee",
    "signature": "0x5307415c13fc2a0ee4cae23a546c16129abf21922655fd1bbb0fae741243328b267f6e16439bb81324e532eb64f22957da184bd00dbc3a5616f6ec6e25c88d341b",
    "signer": "0x428df7C89b250770b2C984e1AFc3524CfB11738c",
    "userId": "410571818"
  }
}