{
  "manageEntity": {
    "action": "Save",
    "entityId": "1330935410",
    "entityType": "Track",
    "nonce": "0xfa25815a0a0f0c28693ceddca9d846f446f9a44c193068e74f7e56ad63a11ab8",
    "signature": "0x3500a70bbbace9de78cac4d7d13a4ff42702dd8d3373593cc9de3d3f199ee3de32e341cb33da7fdbb9e90b456e8279dfad1cf0f02da2f4622c6e98cdb04ecfd81c",
    "signer": "0x14d7618B82Da4e7176FDe32e4379943eCd69798D",
    "userId": "238125623"
  }
}