{
  "manageEntity": {
    "action": "Save",
    "entityId": "186493743",
    "entityType": "Track",
    "nonce": "0x2cb5454a1e90c8e794f2fbbebff8236a0343bae3bf25df75a2c20f0b4e34c6d7",
    "signature": "0x5c32684f20ea0d80011200f5dc4b6f0f40132e939e31dfc72ab127c9e07a1ef729357d2c11e0498a7f26518ef787b7350da1d345cd2071c48ce41b7893f956b11c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}