{
  "manageEntity": {
    "action": "Save",
    "entityId": "1159626347",
    "entityType": "Track",
    "nonce": "0x5f747cd961ba31153620fb83c867a0c0871f93871bdfc9912993a99bb1f7b22d",
    "signature": "0x45d849e188d4faa085b8efea3b4d92581d428f6971bac770dc9684b8f291bcfa7c8d0bb5d58e7809ce515daafa6879237907868e4cb0c2afc976dafc20a507f81b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}