{
  "manageEntity": {
    "action": "Save",
    "entityId": "859199127",
    "entityType": "Track",
    "nonce": "0xd6f3e06dc3c4f703b259701fc27ae5e541ca38541afa0e3838a578dd6c130a22",
    "signature": "0x8128c1ce85fe27332687d90b6d2d315c7f2ac4e6d0d56c1832b48e105f869e25026f071046ee8da6101dd570c9ccff8565ca8bf189428ad2362d98c3fc5ac5941b",
    "signer": "0xA1BD575717EC9252C5B20A20F0867727009A53ce",
    "userId": "676473235"
  }
}