{
  "manageEntity": {
    "action": "Save",
    "entityId": "1186641141",
    "entityType": "Track",
    "nonce": "0xc41add845e8c56cfc26567b4fbd2eb76be5d8129499311961be44e66eda6712e",
    "signature": "0x89d03d523dad81a216d06eb4ed28fa0c9f2e30c0c8ae359c13cc30a0f8506d6e3e346cc51155e787d57956ee10a16a280da05ca85001f95fc51050449815f6a11c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}