{
  "manageEntity": {
    "action": "Save",
    "entityId": "860579788",
    "entityType": "Track",
    "nonce": "0x3c97aa95e792625534c5bfb420a41df42d04c690fe61ee4ed42d530f4fdf77cf",
    "signature": "0xeb7bd3bbad3cf91f6507a9a88f33fda8982f3cb42bc2a72e48f6365bbe6254ec64277a90abffe82c7af072fb7be4d582f895a594507d586f142415e8f4aeb68a1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}