{
  "manageEntity": {
    "action": "Save",
    "entityId": "1306577542",
    "entityType": "Track",
    "nonce": "0xb357a69957596f27f4b3f988928ad0047c192ba11b2abdac6639d1af22564052",
    "signature": "0x72fee225ddd5d55d4a00f40dbd84f4ecbad16611b3f037958fac5151d45370b322a9c419b465ce20f515b04c6a3ba9c0b0b46f485197c433fcfa7052da3709e81b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}