{
  "manageEntity": {
    "action": "Save",
    "entityId": "1455367097",
    "entityType": "Track",
    "nonce": "0xa166be25fa80309cff67529c0d507364e5be9f88b1199e470c09c8c3f2e319b6",
    "signature": "0x687db33039e25f7f8c39aea4cfc6507c6cedbe6f987cf04a3dda89e422da07ee5629750c44b4323c65611c04c455faaf390a34c8372b0f6dc792cdc8caad4c1b1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}