{
  "manageEntity": {
    "action": "Save",
    "entityId": "2070689493",
    "entityType": "Track",
    "nonce": "0x45ce4769cc4421726c17a9627876d1b01487dd3f3066230f411e11467117af1a",
    "signature": "0xa550826f036fb309563663d69f3e3d4f95a0bd7c88025d126833972b2f4e530b063b37d486cd34254261937315d83bfa4f8f2ae8de3fd0cc5e15aebf7c8d04131c",
    "signer": "0xA3B40AD9bEaDeb7a11B85d9088BaC12a3F2Eca1f",
    "userId": "199809170"
  }
}