{
  "manageEntity": {
    "action": "Save",
    "entityId": "162823896",
    "entityType": "Track",
    "nonce": "0xf76495fe98ce38c0af02fdfc063f0f2670c3f7401263edc4f49fe32ae4efe8ce",
    "signature": "0x9789fa4a69bf10de9e2e2f134124b75c7be3ad5d247edbc6761cb512e8a159515760bd0f01fe40e33f4c8358611c6a3b1d0498598f861af15ca49fe23c4d766d1c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}