{
  "manageEntity": {
    "action": "Save",
    "entityId": "884614938",
    "entityType": "Track",
    "nonce": "0xacca27e69b7fa75dc2c589a8144927d15695bf59dda2cdbef213139d4e0820da",
    "signature": "0x0412eb9c052ee8d4550aaa06c8978cb3a2a882803cec4c70862381123335142b5f39f762153799765bf47b364ea112a8fc12c1925ef2896485bc0eaa04c3d9ea1c",
    "signer": "0xB51aA2AC0CABdaDceA1A7997f09581AE59cE0679",
    "userId": "825209277"
  }
}